Brussels is trying to turn a sanctions artefact into a long term funding lever for Kyiv. On 3 December the European Commission set out a Reparations Loan idea that would raise money for Ukraine’s 2026 and 2027 needs by drawing on the cash balances connected to immobilised Russian central bank assets held in the EU, while also presenting market borrowing as an alternative route. The Commission is pitching this as predictable support for Ukraine’s armed forces and basic state functions, with flexibility to shift spending as battlefield and reconstruction needs change. EU leaders are expected to return to the file at the 18 December summit, where the plan’s political buy in and legal cover will be tested against worries about blowback. Moscow has chosen escalation by law and rhetoric rather than quiet diplomacy. Russia’s central bank has labelled any EU move to use the immobilised assets, directly or indirectly, as unlawful and a breach of sovereign immunity. On 12 December it also launched a lawsuit in a Moscow court against Euroclear, the Brussels based clearing house that holds the bulk of the assets, seeking damages tied to being shut out of managing and accessing the funds. The filing adds force to earlier Russian warnings of retaliation, while also aiming to chill the appetite of European institutions that would have to handle the money. The European Commission has dismissed the case as speculative and politically motivated, signalling that it does not see the legal threat as a reason to slow down. The EU answer is to make the freeze harder to reverse. The current sanctions framework requires renewal every six months and has given holdout capitals repeated leverage over policy. Member states are now preparing a mechanism to immobilise the roughly €210 billion indefinitely through qualified majority voting, removing the unanimity trap and smoothing the path for a large loan backed by the assets. The Commission is leaning on emergency economic powers in the treaties as its legal base. Belgium has pushed hard for wider risk sharing because so much of the money sits at Euroclear and because any Russian legal offensive would hit Belgian courts and institutions first. Even if the legal scaffolding holds, the financial plumbing remains contested. Euroclear has warned publicly that political assurances from Brussels do not fully resolve concerns about an untested design that concentrates risk on a single financial intermediary. Officials at the European Central Bank have also flagged worries that stretching the sanctions regime into structured financing could unsettle global reserve holders and complicate the euro’s reputation as a neutral store of value. Research produced for the European Parliament shows how divided expert opinion remains on the legality of moving beyond interest income towards using the underlying assets, leaving policymakers to juggle court risk, market confidence and wartime urgency. Russia, meanwhile, is signalling that it has counters that could hurt European interests still caught inside its jurisdiction. Russian officials have pointed to special account regimes that trap foreign investors’ securities and cash flows, as well as the scope for pressure on foreign owned assets that remain on Russian territory. Those threats are feeding into EU internal bargaining, as capitals weigh the benefits of collective action against the risk of uneven retaliation. For Brussels, the political bet is that Moscow cannot plausibly claim full sovereign immunity for its reserves while waging a war that has generated vast damage claims, and that a tightly built EU legal framework can hold until the question is ultimately settled at the negotiating table....