Europe’s Institutions Under Strain: Is the EU and NATO Facing a Crisis?

Russia’s war on Ukraine – the largest conflict in Europe since WWII – has put unprecedented stress on the European Union and NATO. Observers have asked whether the transatlantic allies are spiraling into economic, political, and social crisis, or proving resilient under pressure. Nearly two years into the war, Europe’s cohesion and stability hang in the balance.

This report examines how the EU and NATO have weathered the storm so far, analyzing key indicators – from inflation and energy supplies to political unity, defense readiness, and public opinion – and explores scenarios ranging from fracture to renewal. As one EU founding father presciently said, “Europe will be forged in crisis, and will be the sum of the solutions adopted for those crises”[1]. Today’s decisions will shape whether the EU and NATO emerge weakened or strengthened by the Ukraine war.

Economic Strains and Resilience Amid War

War Shocks to Inflation and Growth: The war in Ukraine delivered a brutal economic shock to Europe in 2022, just as it was rebounding from the pandemic. Energy and food prices surged as Russia cut gas supplies and fighting disrupted trade, driving Eurozone inflation to a record 10.6% in October 2022[2]. Across 2022–23, EU inflation averaged ~6% higher than pre-war forecasts had assumed[3]. Countries closer to the conflict were hit hardest – in states bordering Ukraine or Russia, inflation ran 3–4 percentage points above the EU average[3], reflecting their greater exposure to energy disruptions and supply bottlenecks. This spike in living costs ignited a cost-of-living crisis that eroded household purchasing power and consumer confidence. Economic growth also downshifted markedly. By late 2022, Europe’s post-COVID expansion stalled; EU GDP even dipped slightly in Q4 2022. Overall EU growth slowed to just +0.6% in 2023[4] – a sharp comedown after 2021–22’s robust rebound – as high energy costs, inflation, and tighter monetary policy “took a heavier toll than expected” on consumption[5].

Energy Dependency and Adaptation: A major vulnerability was Europe’s dependence on Russian fossil fuels, especially natural gas. Before the war, Russia supplied over 40% of the EU’s pipeline gas[6]. Putin’s “weaponisation of energy” forced an urgent scramble to diversify. In an astonishing transformation, the EU slashed Russian gas imports from 150+ billion m³ in 2021 to <52 bcm in 2024[7]. Russia’s share of EU pipeline gas plummeted from ~40% to only 11% by 2024, or under 19% when including LNG[6]. This was largely offset by record LNG inflows and alternate suppliers: e.g. U.S. LNG exports to Europe more than doubled (rising from 19 bcm in 2021 to 45 bcm in 2024), and Norway boosted pipeline deliveries by ~15%[7][8]. Painful as it was – natural gas prices hit all-time highs in 2022 – Europe averted the feared winter blackouts. Emergency energy-saving measures and mild weather helped; by early 2023, EU gas storage was ample and consumption had dropped ~20%. The EU’s “unprecedented LNG imports and significant decline in Russian gas” allowed it to avoid the worst-case energy shortages[9]. This energy resilience is a critical bright spot: Europe has proven it can survive (and ultimately thrive) without Russian energy leverage.

Economic Performance Better Than Expected: Despite war headwinds, Europe’s economy did not collapse – in fact, it fared better than many predicted. Early in the conflict, doomsday forecasts of a deep recession or euro currency crisis were widespread, but the EU confounded the pessimists. As one analysis noted, “defying all doomsayers, the EU economy is performing much better than expected”[10]. Growth in 2022 ended up around 3.5%, and while 2023 was sluggish (+0.6%), a modest recovery is projected to continue into 2024 (EU GDP ~+1.3%)[4][11]. Inflation, though painfully high in 2022, has rapidly disinflated over the past year. Eurozone headline inflation fell from the double-digit peak in late 2022 down to about 2.6% by mid-2024[2] – back near the European Central Bank’s target – thanks to easing energy prices and aggressive interest rate hikes. Table 1 summarizes a few key economic indicators illustrating both the shock and the rebound:

Table 1: Selected EU Economic Indicators (Pre-War vs. War Period)

(Sources: European Commission, Eurostat, ECB, NATO[4][2][6][16])

Defense Spending and Industrial Output: The war has also compelled Europe to reinvest in its defense – a significant economic shift. NATO’s European members and Canada increased defense expenditures by 18% in 2024, “the biggest increase in decades”[16]. Over two-thirds of NATO Allies have now met or exceeded the longstanding pledge to spend 2% of GDP on defense[16], and at the 2024 NATO summit leaders even agreed that “expenditure beyond 2%… will be needed” to remedy shortfalls[17]. In mid-2025, Allies went further, collectively committing to 5% of GDP toward defense investment going forward[18] – a dramatic policy shift to turbo-charge arms production and readiness. Indeed, NATO has launched new initiatives to expand defense-industrial capacity: a 2023 Defence Production Action Plan to coordinate joint procurement and boost weapons manufacturing, and a 2024 Industrial Capacity Expansion Pledge to help members “restock their arsenals while continuing to send military aid to Ukraine.”[19]. These steps are a response to glaring strategic vulnerabilities exposed by the war (explored further below): Europe and NATO initially lacked the industrial base for a protracted high-intensity conflict. Bridging that gap – ramping up production of artillery shells, air defenses, and other materiel – has become an urgent economic priority alongside the traditional metrics of inflation and GDP.

Uneven Impact and Adaptation: Not all EU economies have suffered equally. The closer a country to the war, the harsher the hit. A European Commission analysis finds that for each 1,000 km nearer to Ukraine/Russia, a member state lost ~2 percentage points of GDP growth in 2022–23[20][21]. Border countries like Poland, Slovakia, and the Baltic states were most affected – their growth undershot pre-war forecasts by over 1 pp per year[22][3], and they endured some of the highest inflation in Europe. In contrast, more distant economies (Spain, Ireland, etc.) felt a milder impact. Fortunately, by 2024 the worst economic pressures began to mellow as Europe adjusted[21]. Supply chains rerouted, new energy infrastructure came online, and government supports (e.g. energy price caps, EU recovery funds) cushioned the pain. Europe’s labor market also remained robust – unemployment held around a low 6%[23] even at growth’s trough, preventing a social crisis of mass joblessness. In short, the EU has endured a profound economic stress-test: the war initially “constrained the recovery from the pandemic and cast uncertainty” over the future[24], costing perhaps 1.5–2% of lost GDP and a spike in living costs. Yet the bloc proved more resilient than many anticipated, avoiding a true economic collapse[10]. Inflation is now receding, and a “modest recovery” is on the horizon barring new shocks[11]. This resilience provides critical breathing room – but it does not mean the crisis is over, as the political and social strains detailed next illustrate.

Political Cohesion, Populism, and Social Unrest

Unity Under Pressure: At the political level, the EU’s initial response to the Ukraine invasion was one of remarkable unity. Long-divided 27 nations swiftly agreed on unprecedented sanctions against Russia, coordinated the reception of millions of Ukrainian refugees, and – for the first time ever – financed arms transfers to a country under attack. “Europe’s response to the war in Ukraine has been strong and unified” in the first year[25], defying predictions that Russia’s aggression would splinter EU or NATO solidarity. Putin’s war essentially forged greater cohesion: countries put aside many differences to confront a shared security threat. Historic shifts occurred in neutral states (e.g. Sweden and Finland abandoned decades of non-alignment to seek NATO membership, a stunning affirmation of Western unity[26]). And in the EU, even traditionally Russia-friendly or hesitant governments (like Germany, Italy, France) lined up behind support for Kyiv. This high-level cohesion – 11 packages of Russia sanctions passed, €50+ billion in aid mobilized, etc. – has so far held. However, beneath this display of solidarity, serious internal tensions have been brewing.

Rise of Populist and Nationalist Forces: The war’s cascading crises (inflation, energy crunch, migration flows) have fueled populist and nationalist movements across Europe. These forces question or outright oppose the prevailing EU/NATO policies on Ukraine and other issues, threatening the bloc’s cohesion from within. In several countries, right-wing populist parties surged in popularity throughout 2022–2024, leveraging public frustrations over soaring living costs and war fatigue. For example, Italy saw the nationalist Brothers of Italy win power (though PM Meloni so far maintains support for Ukraine). Hungary’s Viktor Orbán, long at odds with EU liberal norms, became an outspoken critic of sanctions and has impeded some EU aid decisions. In Slovakia, a vehemently Russia-friendly populist (Robert Fico) won election in late 2023 on a platform vowing to halt arms to Ukraine – marking the first outright anti-Ukraine government in the EU. Even in core Western states, populist sentiment is rising: Germany’s far-right AfD, which blames sanctions for economic woes, hit record polling highs; France’s Marine Le Pen (long sympathetic to Moscow) remains a potent opposition voice; and in Poland, domestic political clashes briefly led Warsaw to threaten cutting off weapons to Ukraine (amid a dispute over Ukrainian grain imports hurting Polish farmers). These trends reflect a broader “erosion of trust” in mainstream institutions that has been underway and which the war’s hardships have exacerbated[27].

Years of overlapping crises – pandemic, economic stagnation, and now war – have left many European citizens feeling insecure and disenchanted. According to an EU analysis, “the strain of the last five years has triggered…a deep erosion of trust both in the EU and in national institutions”[28]. While Europe “looks to have weathered the storm well” on the surface, an insidious consequence is that publics increasingly doubt that elites can deliver on their needs[27]. Trust is the “glue” of democracy and solidarity[29]; its decay opens the door for populists who promise simple solutions or scapegoats. Eurofound research finds that those struggling most with the cost-of-living crisis – e.g. low-income households facing energy bill arrears – exhibit drastically lower trust in government[30][31]. Feeling “unheard” and neglected, parts of the population gravitate to anti-establishment narratives[32][33]. Indeed, the war’s economic fallout (inflation at 40-year highs, etc.) has “gradually unraveled the very fabric of trust in institutions” for many Europeans[31]. This disaffection has translated into street protests and political volatility in several countries. Large demonstrations against high energy prices erupted in Czechia, Germany, Belgium, and others in late 2022; some protests mixed legitimate grievances with extremist or pro-Russian voices exploiting the anger. In France, while the biggest protests focused on pension reforms, anxiety over living costs is pervasive. Across Europe, social unrest** remains a risk if inflation flares up again or unemployment rises.

EU Divisions and Cohesion Tests: Intra-EU disputes have also flared, highlighting fault lines that Russia seeks to widen. One example was the clash over Ukrainian grain imports in 2023: Poland, Hungary, and others, under pressure from their farmers, imposed bans on Ukrainian grain to protect domestic markets – a move that angered Kyiv and caused rare public rifts between Ukraine and its staunch Eastern European allies. The European Commission had to mediate to maintain unity. Another flashpoint is migration: the war brought over 8 million Ukrainian refugees into the EU – the largest displacement in Europe since WWII[34]. While EU nations admirably absorbed these refugees (with Poland, Germany, and others taking millions), by the war’s second year “experts worry that host countries are growing fatigued”[35]. The political goodwill for refugees could erode if the conflict drags on and resources stretch thin – especially as Europe is simultaneously coping with migrants from other regions, fueling heated debates on asylum policy. More broadly, the war has revived talk of “EU solidarity” and exposed its limits: wealthy Western states had to step up aid to Eastern frontline states, and disagreements over how to distribute costs (for energy relief, refugee aid, defense spending) have occasionally caused friction.

Despite these stresses, it is important to note that EU cohesion has not collapsed. The center has largely held. Populist parties have gained ground in polls and some parliaments, but most Europeans continue to support helping Ukraine and sticking with EU/NATO, even if it means sacrifices. Public opinion surveys consistently show majorities in EU countries blame Russia for the war and favor standing with Ukraine – albeit with nuances about the war’s end goals (more on that below). A Bruegel analysis found that contrary to expectations, “support for Ukraine has remained strong” among Europeans despite inflation, and that the public “understands the wider implications for European security” – seeing Ukraine clearly as the victim of aggression and siding accordingly[36]. In mid-2024, as EU voters went to the polls for the European Parliament, right-wing and Euroskeptic parties did make gains, but not a sweeping victory; pro-EU centrists remain in overall charge in Brussels. Still, the political trend is worrying for the establishment. The coming years could bring more electoral upsets that install governments ambivalent toward EU unity or hostile to further support for Ukraine. In that sense, the war’s political toll could yet crescendo. Every additional month of war strains unity a bit more – testing Europe’s patience, resources, and leadership resolve.

Public Opinion and War Fatigue: After an initial wave of solidarity in 2022, some analysts predicted Europe’s citizens would tire of the war as costs mounted. Yet surveys in 2023–25 reveal a complex picture. As noted, baseline support for Ukraine has remained relatively steady. An ECFR poll in spring 2024 found that “support for the war [effort] has barely shifted” among Europeans – the public was still generally in favor of arming Ukraine[37], and Ukrainian morale remained high. However, beneath that stability lies a “profound chasm” in perspectives: Ukrainians overwhelmingly seek outright victory, while most Europeans (while pro-Ukraine) ultimately hope for a peace settlement[38]. In other words, Europeans want Ukraine to resist Russian aggression, but many frame the support in terms of pushing Russia to negotiate, not necessarily total defeat of Russia. ECFR found that “most Europeans want to give Ukraine weapons…to put Kyiv in a better negotiating position to end the war,” whereas Ukrainians want weapons to win outright[39][40]. Likewise, Ukrainians see joining the EU and NATO as the just reward for their sacrifice, whereas many Europeans view those as things to consider only as part of a future peace deal[41][42]. These differences could become politically salient if the war bogs down. Already, hints of “Ukraine fatigue” can be seen: e.g. a 2023 Eurobarometer showed a slight dip in those labeling EU support for Ukraine “adequate” versus those saying it’s too much, and far-right voices amplify any war-weariness. For now, Europe’s publics have not en masse demanded an end to support for Ukraine – indeed, they “remain supportive…suggesting the public fully grasps that European security is at stake” in Ukraine’s fate[36]. But the risk is that populists will exploit any stalemate or recession to argue that Europe should “solve our own problems” instead of “funding a endless war.” The longer the conflict drags on without a clear resolution, the more this narrative may resonate, especially if coupled with other crises (energy price spikes, etc.). Social cohesion within EU countries – already frayed by inequality and disinformation – could deteriorate further, undermining the united front against Putin.

In summary, politically and socially the EU is under strain but holding. Unity is being tested by populist insurgencies, by internal policy rifts, and by the sheer fatigue of crisis management. Yet, the fundamental commitment to the European project and to NATO’s collective security has not broken. Europe’s democracies are, for now, proving more resilient than the Kremlin may have expected. Whether that continues will depend on both external developments (the war’s trajectory, global economic conditions) and internal leadership in addressing citizens’ grievances. The next section turns to NATO and military aspects – where similar themes of remarkable unity tinged with underlying vulnerabilities emerge.

NATO’s Unity and Military Capacity Under Stress

Alliance Solidarity and Expansion: NATO, like the EU, has experienced a renaissance of unity in response to Russia’s aggression. After years of hand-wringing about transatlantic drift, the war “shattered peace in Europe” and jolted NATO into its most significant collective action in decades[43]. Allies rapidly activated defense plans, deployed battlegroups to reinforce Eastern members, and poured weapons into Ukraine on an unprecedented scale. Far from splitting NATO, Putin’s invasion “remains the most significant and direct threat to Allies’ security” and has bound them closer together in solidarity[43]. The Alliance, celebrating its 75th anniversary in 2024, proclaimed that it “stands in unity… at a critical time for our security”, with an “iron-clad” commitment to defend every inch of Allied territory[44]. In strategic terms, the war has achieved the opposite of Putin’s aims: NATO has enlarged, welcoming Finland (2023) and Sweden (2024) as new members[26]. These accessions bring NATO’s border directly to Russia’s doorstep in the High North, add substantial capable forces, and signal that neutral states now see NATO as essential for survival. The Alliance also bolstered its partnerships with non-members; even historically non-aligned EU states like Ireland and Austria have drawn closer to NATO coordination. In short, NATO’s political cohesion is strong – no member has broken ranks to side with Moscow. Notably, even Turkey (which initially stalled Sweden’s bid and maintains ties with Russia) ultimately agreed to enlargement, and Hungary (often an EU outlier) has not vetoed NATO’s united actions on Ukraine. The Alliance’s 75-year-old core bargain – collective defense and shared values – has been reinvigorated by the clear and present danger of Russian aggression[45].

Military Aid and “Arsenal of Democracy”: Operationally, however, the war has exposed serious strains on NATO’s military capacity and logistics. The extensive provision of arms to Ukraine – while vital for Ukraine’s survival – revealed that NATO countries were not prepared for a long, high-intensity war in their backyard. Stockpiles of everything from 155mm artillery shells to anti-air missiles dwindled as Ukraine burned through amounts that peacetime planners never envisioned. A stark illustration: in just the first 3 months of 2024, Russia produced as much ammunition as NATO produces in an entire year[46]. Analysts estimate Russia’s shell factories (on a 24/7 wartime footing) have ramped output to ~250,000 rounds per month, whereas the U.S. and Europe struggled to match that pace[47]. By 2025, Russia expanded artillery production more than tenfold (to ~4.2 million shells a year)[48], aided by imports from partners like North Korea – giving Russian forces a 5:1 firepower advantage at points. Meanwhile, NATO countries found their own war reserves running low after donating so much to Kyiv. Ukraine’s army was firing perhaps 6,000–7,000 artillery rounds a day in 2023, a rate that far outstripped Western replenishment in the short term[49]. This “ammunition gap” has become NATO’s “weakest link”: it risks eroding deterrence if not swiftly closed[50]. Decades of post-Cold War downsizing left NATO’s defense industry with systemic bottlenecks – from limited production lines and skilled labor shortages to scarce raw materials (e.g. Europe has only a single major TNT producer for shells)[51]. As one report bluntly states, “despite the Alliance’s vast economic power” (combined ~$50 trillion GDP vs Russia’s $2T), that wealth had not translated into the ability to produce enough weapons and ammunition for sustained conflict[52][46]. Decades of underinvestment and “just-in-time” efficiency left NATO ill-prepared for a grinding war of attrition[53].

Recognizing this, NATO leaders have undertaken the biggest reinforcement of collective defense in a generation[54]. They approved new defense plans that put hundreds of thousands of troops at high readiness, expanded multinational battlegroups on the eastern flank, and started forward-deploying more heavy equipment[55]. Critically, they are re-arming: the U.S. ramped up its production of 155mm shells from only 3,000 per month pre-war to 40,000 per month in 2024, aiming for 100,000 per month by end-2025[56]. European industry is following suit via the EU’s ASAP (Act in Support of Ammunition Production) program: the EU targets 2 million shells annually by 2025, a nearly sixfold increase from 2022 output[57]. Key defense firms like Germany’s Rheinmetall are dramatically expanding capacity (Rheinmetall alone plans to make 700,000 rounds per year)[57]. Other NATO states – e.g. Norway, Poland, Turkey, Canada – are adding to the production surge[58]. If these efforts succeed, NATO could by 2026 produce on the order of 300,000+ artillery rounds per month – finally reaching parity with (or exceeding) Russian output[47]. But until then, the alliance remains in a race to arm itself (and Ukraine) fast enough. As NATO planners warn, current trajectories would only achieve parity in a couple years, which is “insufficient for credible deterrence” in the interim[47]. In sum, NATO’s military unity is high – Allies unanimously agree on the need to bolster defenses – but its capacity is catching up from a low baseline. The war has functioned as a wake-up call, exposing that modern peer conflict is vastly more material- and logistics-intensive than the West’s recent counterinsurgency fights. The adjustment is underway, but not complete.

Ukraine’s Battlefield Position and NATO Support: NATO’s ability to support Ukraine – short of direct intervention – is a crucial measure of its strength. Thus far, the alliance (as a coalition of member states) has provided massive aid, but questions persist about sustainability and strategy. Ukraine’s armed forces surprised the world by repelling Russia’s initial onslaught in 2022 and winning battles around Kyiv, Kharkiv, and Kherson with Western help. However, by 2023 the war had ground down into attritional fighting in the east and south. Russia fortified defensive lines, and Ukraine’s much-heralded 2023 counteroffensive made only incremental gains at heavy cost, prompting debates in Western capitals about alleged strategic missteps. Some critics argued that the West’s piecemeal, gradual escalation of arms deliveries (e.g. hesitating on advanced tanks, delaying long-range missiles, etc.) gave Russia time to adapt and entrench – a strategic failure that blunted Ukraine’s breakthroughs. On the other side, Moscow’s inability to conquer Ukraine or break NATO unity has been a strategic failure for the Kremlin’s aims. By early 2024, stalemate loomed: Russia still occupied roughly 17% of Ukraine, and front lines moved only slowly. An ECFR brief described an “uneasy” situation: U.S. aid was delayed in late 2023 due to political wrangling, causing a shortage of ammunition on the frontline, which allowed Russia to “outshell Ukraine, destroy half of [Ukraine’s] electricity grid, and even reconquer territory” in places[59]. (Indeed, Russia did manage small offensives around Bakhmut and elsewhere.) Such setbacks fueled worries that without a dramatic increase in support, Ukraine might be locked in a bloody stalemate or worse.

NATO’s capacity to keep supporting Ukraine indefinitely is thus under scrutiny. While politically NATO has been steadfast (“we will support Ukraine for as long as it takes,” leaders say), practical constraints – ammunition, hardware wear-and-tear, financial burden – are real. Some European militaries have frankly admitted they’ve given “as much as we can” without undermining their own defense readiness. The United States has contributed the most (over $60 billion in military aid so far[60]), but U.S. stockpiles of certain items (e.g. Stinger missiles, 155mm rounds) are low and production lead times long. European allies collectively have provided the majority of financial and humanitarian aid, and about 40% of military aid (led by the UK, Poland, Germany, etc.)[61]. As of 2024, NATO was establishing a long-term support plan for Ukraine – transitioning from ad hoc donations to a multi-year assistance program to train and equip Ukrainian forces to NATO standards[61]. This suggests NATO is bracing for a protracted conflict, effectively incorporating Ukraine as a de facto partner on the road to possible future membership. However, the longer the war drags on, the more NATO’s cohesion may be tested by differing views on endgame. Already, strategic divergences exist: some Eastern European members insist that only Ukraine’s total victory and Russian defeat will secure Europe, whereas some Western European voices quietly ponder potential ceasefire or “Korea scenario” outcomes to halt the bloodshed. These strategic debates have not yet split NATO – indeed, NATO official policy remains that Ukraine will decide the timing/terms of any negotiations, and NATO will continue to back Ukraine’s hand. But unity could be strained if, say, one group of allies began pushing Kyiv to accept a frozen conflict while others urged fighting on. In essence, NATO’s ability to support its member states (and close partners like Ukraine) is not just about weapons capacity but about strategic alignment and stamina.

Europe’s Military Dependence on the U.S.: A critical underlying issue is the balance of burdens within NATO. The war has vividly demonstrated that European security still relies heavily on American power. As one strategic review noted, while Russian forces have underperformed, the war exposed “the limits of European forces without the support of American forces.”[62] The U.S. provides the lion’s share of high-end capabilities – intelligence, long-range fires, air and missile defense, strategic transport, and of course the ultimate backstop of its nuclear arsenal – that Europe alone cannot easily substitute in the short term. European NATO members collectively spend roughly 3–4x Russia’s defense budget and have about 1.8 million troops, yet their ability to project force or sustain intensive combat is limited without U.S. enablers. This has spurred renewed calls for Europe to take on more responsibility – often termed “strategic autonomy” or, as the Egmont Institute framed it, for the EU to act as a genuine security actor and “not a ‘protégé’ under U.S. curatorship.”[62] To be clear, European leaders are not seeking to decouple from the United States; NATO is acknowledged as indispensable. But there is a realization that Europe must “step up” its own defense efforts to be a truly equal partner[63]. The war has prompted the EU to launch initiatives like joint arms procurement funds and a Rapid Deployment force, and countries like Germany enacted historic defense spending boosts (its €100bn fund). Poland is undergoing a massive military expansion, aiming to field Europe’s strongest land army, and others are following. These moves could, over time, reduce the imbalance. Until then, however, NATO’s strength – and Europe’s security – remain closely tied to U.S. engagement.

That raises the worrying question: what if U.S. priorities shift away from NATO? The next section examines that issue of U.S. commitment and the specter of separate U.S.-Russia dealings, which could profoundly impact NATO and EU stability.

The U.S. Stance: Supporter or Wild Card?

For the past two years, the United States has been the cornerstone of NATO’s response – rushing arms to Ukraine, reinforcing Europe with additional troops, and coordinating the allied strategy. President Biden has been unequivocal in declaring support for NATO and European security. However, looking ahead, there are claims and concerns that U.S. priorities could change in ways that unsettle Europe. Two related fears often voiced in European policy circles are: (1) that Washington may start deprioritizing the European theatre (to focus on China or due to domestic fatigue), and (2) that the U.S. might seek to cut a deal with Russia over Europe’s head if it judges that in its interest.

One immediate concern arose in late 2023 when U.S. Congressional turmoil delayed additional Ukraine aid. This alarmed Europeans about America’s political will. While support for Ukraine has strong bipartisan backing overall, a vocal minority in the U.S. (particularly some legislators on the right) oppose blank-check aid. European officials worry about a scenario where U.S. domestic politics – for example, a resurgence of “America First” sentiment – leads to a sharp drop in U.S. engagement. If, say, a U.S. administration were to reduce military aid or press Ukraine to settle prematurely, NATO unity would be strained. The 2024 U.S. election looms large: former President Trump, running again, has openly mused about making Ukraine and Russia “make a deal” quickly to end the war, even if that means Ukraine ceding territory. In European capitals (and Kyiv), this is a nightmare scenario – being sidelined while Washington and Moscow negotiate the continent’s fate. An AP analysis noted that both Ukraine and Europe “worry about being sidelined” if a future President Trump were to push direct talks with Putin on ending the war[64]. In that hypothetical event (e.g. Trump declaring he and Putin agreed to start negotiations), it would “upend” the unified Western policy of backing Ukraine until a just peace is reached[65]. European governments could find themselves caught between loyalty to an ally (the U.S.) and solidarity with Ukraine’s aims, potentially causing the first major breach in the transatlantic front.

Even under the current U.S. administration, there have been periodic backchannel contacts with Russia – for deconfliction or exploring possible off-ramps. This feeds speculation in some European media that the U.S. might strike a bargain over European interests. For instance, in early 2023 a Swiss paper claimed CIA Director Burns had offered Moscow a secret peace proposal (ceding Ukrainian land for peace), which was swiftly denied as a “hoax” by both Washington and Moscow[66]. While likely untrue, that episode highlighted the sensitivity: Europeans fear a “Yalta 2.0” where great powers decide spheres of influence without them. So far, the Biden administration has reassured allies that nothing will be agreed about Ukraine without Ukraine. Nonetheless, European strategists remain wary: if the war reaches a stalemate and U.S. global strategy pivots more toward containing China, Washington might be tempted to “freeze” the European problem through a deal that pauses the fighting – potentially leaving parts of Ukraine occupied and Russia able to regroup. Such an outcome, if done without full NATO consensus, could sow mistrust and a sense of abandonment in Eastern Europe.

Another dimension is the U.S.’s own resource allocation. The Pentagon has finite capacity; a conflict in Asia or other contingency could force the U.S. to reallocate forces away from Europe. American officials have bluntly told EU counterparts that Europe needs to shoulder a greater share of its defense – not as a slight, but because U.S. attention cannot be in two places at once at full capacity. If Europe does not bolster its capabilities (as discussed above), and if the U.S. had to divert military assets to a Taiwan crisis, NATO’s deterrence in Europe could temporarily weaken – a dangerous prospect if Russia remains aggressive. These strategic realities drive European initiatives to ensure NATO can “deter and defend against all threats” even amidst “strategic competition [with China], pervasive instability… and recurrent shocks” elsewhere[67][68]. The NATO Summit communiqués explicitly acknowledge the interconnected nature of threats and the need for Europe to be more robust in its own neighborhood so the U.S. isn’t overburdened.

In summary, the U.S. is not turning its back on NATO – if anything, the war reinforced U.S. commitment in the short term, with more American troops in Europe now than pre-war and firm diplomatic leadership. But the medium-term uncertainties (domestic politics, global pivot) mean Europe must contemplate a future where it cannot assume unbounded U.S. support. European analysts warn that any flawed or hasty peace that doesn’t safeguard Ukraine’s sovereignty would leave Europe in a “perennial crisis, weakening U.S. and European security” alike[69]. Thus, they urge a careful alignment: end the war, yes, but not at the expense of principles or future stability[70][69]. The optimal path is seen as maintaining transatlantic unity – convincing any future U.S. leaders that a secure Europe is foundational to U.S. interests, while Europe boosts its own contributions to ease the burden. NATO as an institution remains the “unique, essential forum” for coordinating collective security[71], and its continued strength will hinge on keeping the U.S.-Europe bond strong. The worst-case divergence – the U.S. striking a unilateral grand bargain or drastically cutting Europe loose – is still a low-probability scenario, but one with such dire implications that European policymakers must scenario-plan for it. This leads us to consider several possible future scenarios for the EU and NATO as the war and its aftershocks evolve.

Outlook: Scenarios from Crisis to Renewal

It remains uncertain whether the EU and NATO will emerge from the Ukraine war fractured or fortified. Much depends on how long the conflict endures, its eventual outcome, and how leaders manage the internal challenges outlined above. Here we sketch three broad scenarios – Partial Collapse, Renewal through Reform, or Resilient Recovery – to illuminate the range of possible futures:

1. Partial Collapse of Unity: In this pessimistic scenario, the strains continue to mount and key pillars begin to buckle. A protracted stalemate in Ukraine, combined with a possible economic downturn, fuels “Ukraine fatigue” and empowers populists across Europe. Suppose in 2025–26 multiple major states elect nationalist, EU-skeptic leaders (e.g. a euroskeptic government in France or Germany, or a hard-right U.S. administration). They could freeze or reverse commitments to Ukraine, veto further EU sanctions or aid packages, and openly clash with Brussels and Washington. EU cohesion could break down, paralyzing decision-making – some analysts call this a “polycrisis” tipping point where the Union’s authority erodes. One could imagine countries like Hungary or a Slovak-led bloc refusing new Ukraine assistance, while others like Poland (under a different government) act unilaterally, undermining the common front. NATO might face internal rifts if, say, Turkey or another member tilts closer to Russia, or if the U.S. significantly downgrades its NATO role. In the worst case, such centrifugal forces could lead to de facto fragmentation: a NATO that exists on paper but with members pursuing divergent security arrangements, or an EU where critical policies (sanctions, energy, defense) are blocked by vetoes, rendering the union ineffective in crises. “Partial collapse” wouldn’t necessarily mean formal dissolutions (no state is likely to outright quit NATO/EU imminently), but rather a hollowing-out – a loss of credibility and collective capacity. Europe would be left more divided and vulnerable, which Moscow would surely exploit. Warning signs for this scenario include escalating social unrest, further steep drops in public trust, and electoral upsets by anti-system parties (who often empower populism, thereby “undermining…the stability of our societies during periods of geopolitical confrontation”[72]). If leaders fail to restore public trust and tame economic woes, the risk of this negative spiral increases.
   
2. Reform and Reconfiguration: This scenario envisions the EU and NATO taking proactive steps to adapt and bolster their resilience, thereby weathering the storm through change. Crises have historically prompted Europe to integrate further – and the Ukraine war could catalyze reforms that strengthen unity. For the EU, this might mean deepening its defense and energy union: joint procurement of weapons (already started with the ammunition initiative) becomes routine; defense spending coordination under an “EU pillar” of NATO grows; and energy policy is overhauled to permanently end reliance on hostile powers (with massive investments in renewables, LNG terminals, and interconnectors). Politically, the EU could address internal rifts by reforming decision-making (e.g. moving from unanimity to qualified majority in foreign policy to prevent single-state vetoes). It may also pursue institutional reforms to deal with populist governments – for instance, stricter enforcement of rule-of-law norms or compromise deals that bring recalcitrant members back into alignment. NATO, for its part, is already modernizing its force posture (new regional plans, high-readiness forces, U.S. brigades rotating in Eastern Europe) and could further adapt by formally incorporating Finland/Sweden’s capabilities and perhaps developing new partnerships (with Indo-Pacific allies, for example, to share burdens). In a reform scenario, Europe also likely pushes forward on enlargement and partnerships: the EU might expedite membership talks for Ukraine (assuming reforms in Kyiv) to cement a geopolitical win, and NATO may craft a clearer path for Ukraine’s future membership or long-term security guarantees[73][74]. Essentially, the shock of war impels the West to fix its weaknesses – from ammunition production to energy security to media resilience against disinformation. This scenario would mirror the ethos of “never let a good crisis go to waste.” We already see seeds of it: Europe’s rapid decoupling from Russian gas and NATO’s industrial pledges are historic shifts that few imagined pre-2022. If these efforts continue and expand, the alliance and union could emerge re-tooled and stronger. Challenges (like populism) would be met by policy responses (e.g. social safety nets, communication strategies) to rebuild trust. Europe would stand more united, having implemented the “significant political leadership, vision, and capital” that experts say are required in this moment[73]. In effect, the crisis becomes a turning point toward a more cohesive and strategically mature Europe.
   
3. Resilient Recovery: In the most optimistic outlook, the war’s active phase ends within the next year or two in a way that vindicates the EU/NATO approach – for instance, a negotiated settlement or frozen conflict on terms acceptable to Kyiv (perhaps after additional Ukrainian gains) that leads to a durable ceasefire. In this scenario, the EU and NATO, having avoided both military escalation and appeasement, can pivot from crisis mode to long-term stabilization. Economic recovery would accelerate: resources now spent on emergency energy subsidies or wartime aid could shift to rebuilding Ukraine and investing in Europe’s own industrial base. Inflation would continue to fall (EU forecasts already see it dropping to ~2% by 2025[75]), relieving pressure on households. With the war threat reduced, Europe could focus on internal cohesion: addressing the social cleavages the war exposed. The massive effort of Ukraine’s reconstruction – akin to a modern Marshall Plan – could become a unifying mission for the EU, reminding Europeans of the purpose of solidarity. NATO, in this scenario, would not demobilize but rather use the breathing room to institutionalize lessons learned (e.g. make the high defense spending permanent, maintain the new eastern deployments, and integrate Ukraine’s battle-hardened military into Western structures). Public opinion might also rally in pride that Europe stood firm and helped end the conflict on principled terms. This “recovery” scenario doesn’t imply everything goes back to status quo ante – too much has changed – but rather that the worst instabilities (runaway inflation, imminent war escalation) abate, allowing politics to normalize somewhat. Populist fervor might cool if the economy improves and the refugee situation stabilizes. The EU could emerge with a reputation enhanced by crisis management that ultimately worked. Such an outcome would echo the famous Monnet quote – Europe as the “sum of solutions adopted” in crises[1] – with the Ukraine war solution being a stronger security architecture and a recommitment to the European project. Of course, this optimistic path likely requires that Russia’s threat is contained and Ukraine remains a sovereign, democratic nation aligned with Europe. It also assumes continued Transatlantic cooperation – a “free world” success that could deter future aggressors. In effect, resilience leads to renewal.
   

Ultimately, reality may encompass elements of all the above. The future will not neatly follow a script – it will be shaped by countless decisions in Washington, Brussels, Kyiv, and Moscow, and by the will of ordinary citizens enduring hardship. What is clear is that the EU and NATO are at an inflection point. The war in Ukraine has tested their founding ideals of solidarity, collective defense, democracy and prosperity. So far, they have not cracked: “Europe’s response… has been strong”[25], and NATO remains “the strongest Alliance in history” by its leaders’ own assessment[45]. But maintaining that strength will require wise leadership to navigate economic recovery, address legitimate public grievances, and deter adversaries without provoking wider war.

Conclusion

In assessing whether the EU and NATO face a serious crisis amid the Ukraine conflict, the evidence suggests a dual answer: Yes, a crisis in the sense of immense strain and decisive challenge; but No, not a terminal crisis – rather a crucible. The European Union and NATO have been stressed on all fronts – economically by inflation and energy shocks, politically by fractious populism, militarily by the demands of supporting Ukraine and rearming themselves. Yet, in crucial ways, they have also been strengthened: NATO is larger and more unified than it was pre-war, EU members have shown uncommon resolve in isolating Russia, and Western publics (while anxious) largely grasp the stakes of European security. As NATO’s 2024 summit declaration put it, “NATO remains the unique, essential, and indispensable Transatlantic forum… Our commitment to defend one another… is iron-clad.”[76] Those words will be tested in the months and years ahead. If the war continues grinding on, pressures will grow – but so too may innovation and unity in response. Europe’s story has often been one of “forging unity through crisis”[1]. The Ukraine war is perhaps the sternest test since the Cold War’s end. Thus far, it has revealed both cracks and reinforced steel in Europe’s foundations. The outcome – crisis or catalyst – will depend on whether the transatlantic community can sustain its core values of solidarity and resilience under duress. The stakes could not be higher: the stability of Europe’s economic, political, and social order for a generation to come.

Sources:

• European Commission, “The cost of EU Member States’ proximity to the war,” Nov 2025[24][77][3].
• Council of the EU, “Where does the EU’s gas come from?” (Infographic), 2024[6][7].
• NATO, Washington Summit Declaration, July 2024[16][54].
• NATO, “NATO’s role in defence industry production,” updated June 2025[18][19].
• Isabel Schnabel (ECB), speech on Euro area inflation, Sept 2024[2].
• European Commission, Autumn 2023 Economic Forecast[4][75].
• Eurofound, “Trust in crisis: Europe’s social contract under threat,” May 2024[27][31].
• ECFR, “Ukrainian and European views on Russia’s war,” July 2024[39][38].
• CFR (Ciaramella & Green), “Ukraine, NATO, and War Termination,” Feb 2025[70][69].
• Atlas Institute, “The Strategic Ammunition Gap: NATO’s Industrial Lag,” Oct 2025[46][51][50].
• Consilium (EU Council) Library, Think Tank reports on Russia’s invasion (2022–24)[73][62].
• AP News, “Ukraine and Europe worry about being sidelined…” (scenario analysis)[65].
• Bruegel, “European public opinion remains supportive of Ukraine,” 2023[36].
• CFR, “How bad is Ukraine’s humanitarian crisis a year later?” March 2023[34].
• CSIS, “A Continent Forged in Crisis: Europe One Year into the War,” Feb 2023[10].

[1] [27] [28] [29] [30] [31] [32] [33] [72] Trust in crisis: Europe’s social contract under threat | Eurofound

[2] Isabel Schnabel: The euro area inflation outlook – a scenario analysis

[3] [20] [21] [22] [24] [77] The cost of EU Member States’ proximity to the war – Economy and Finance

[4] [5] [11] [12] [13] [14] [23] [75] Autumn 2023 Economic Forecast: A modest recovery ahead after a challenging year – Economy and Finance

[6] [7] [8] Where does the EU’s gas come from? – Consilium

[9] [34] [35] [36] [62] [63] [73] [74] Think Tank reports on the invasion of Ukraine 2022 – February 2024 – Consilium

[10] A Continent Forged in Crisis: Assessing Europe One Year into the War

[15] Germany, EU remain heavily dependent on imported fossil fuels

[16] [17] [26] [43] [44] [45] [54] [55] [67] [68] [71] [76] Washington Summit Declaration | NATO Official text

[18] [19] NATO’s role in defence industry production | NATO Topic

[25] Europe’s response to the war in Ukraine has been strong and …

[37] [38] [39] [40] [41] [42] [59] The meaning of sovereignty: Ukrainian and European views of Russia’s war on Ukraine | ECFR

[46] [47] [48] [49] [50] [51] [52] [53] [56] [57] [58] The Strategic Ammunition Gap: NATO’s Industrial Lag Risks Deterrence | Atlas Institute for International Affairs

[60] U.S. Security Cooperation with Ukraine – State Department

[61] Relations with Ukraine | NATO Topic

[64] [65] Ukraine and Europe worry about being sidelined as Trump pushes …

[66] Russia rejects reports that U.S. offered Moscow secret Ukraine peace plan | Reuters

[69] [70] Ukraine, NATO, and War Termination | Council on Foreign Relations