The United Kingdom’s commitment to Ukraine’s defence entered a new phase of uncertainty this week as the government resisted calls to seize Russian assets frozen in London. The move, advocated by Kyiv and several eastern European allies, would have generated billions of pounds for Ukraine’s war effort. But British officials argued it risked undermining the City of London’s reputation as a safe haven for international capital.
The debate exposed a growing divide between European capitals and Washington over the future of financial support for Ukraine. The United States, the largest single donor to Ukraine’s military and budget, has signalled that its commitment may wane. A fresh aid package remains stalled in Congress, and former President Donald Trump, the presumptive Republican nominee in the 2024 election, has suggested he would press Kyiv to accept a negotiated settlement.
European leaders, meeting in Brussels, acknowledged that they must now prepare for a scenario in which American assistance is not guaranteed. The European Union has committed 50 billion euros in long-term financial aid. But military hardware, including artillery shells and air defence systems, remains in short supply. The German government this week announced it would double military aid to Ukraine this year to 7.5 billion euros. But that figure is dwarfed by the 61 billion dollars still pending in Washington.
“This is a defining moment for European security,” said a senior British defence official, speaking on condition of anonymity. “We cannot afford to assume the United States will continue to carry the primary burden. We must reorganise our defence industries and our budgets accordingly.”
The challenge for European capitals is twofold. First, they must sustain a war effort that consumes enormous resources every day. Ukraine is firing up to 7,000 artillery rounds per day; Russia, according to Western intelligence, is producing three times that number. European defence companies are struggling to ramp up production after decades of underinvestment.
Second, they must do so without damaging their own economies. The Bank of England warned this week that the conflict was contributing to inflationary pressures, particularly in energy and food prices. The UK’s own defence budget, already stretched by commitments to NATO and overseas operations, faces a 16 billion pound shortfall over the next five years, according to a report by the House of Commons Defence Committee.
“The arithmetic is relentless,” said Professor Timothy Garton Ash, a historian at Oxford University. “Europe can do more, but it cannot do everything. The question is whether the American political system, in an election year, will allow the continuation of the bipartisan consensus that has sustained Ukraine since 2022.”
Russian forces, meanwhile, have exploited the delay in Western resupply. They have made tactical advances in eastern Ukraine, capturing the town of Avdiivka last month and threatening the city of Chasiv Yar. Ukrainian commanders report a critical shortage of artillery shells and air defence interceptors. “Every day we wait, we lose ground,” one Ukrainian officer told the BBC.
Diplomatic efforts to seize Russian assets have gained momentum in the United States, where the House of Representatives passed a bill authorising the confiscation of Russian sovereign assets held in American institutions. But the British and German governments have resisted, fearing retaliation from Moscow and damage to the global financial system.
“The seizure of sovereign assets is a serious step, not a negotiating tactic,” said a UK Foreign Office spokesperson. “We continue to explore legal channels that could support Ukraine without undermining the rule of law.”
Critics argue that the caution is misplaced. “Russia has already destroyed the post-war financial order by invading its neighbour,” said Andriy Yermak, head of the Ukrainian presidential office. “A few frozen assets in London are a small price to pay for restoring it.”
As the war enters its third year, the transatlantic alliance that has sustained Ukraine faces its most severe test yet. The outcome will shape not only the future of Ukraine, but the credibility of the West’s commitment to defend democratic sovereignty against aggression.
