EU Custodian Proposal Reignites Debate Over Frozen Russian Assets in Belgium

A renewed push to establish a European Union-level custodian for frozen Russian sovereign assets is gaining traction among policymakers, as frustration mounts over the prolonged political stalemate surrounding billions of euros held primarily in Belgium. The proposal, which has circulated in various forms since the early days of Russia’s full-scale invasion of Ukraine, is now being reassessed as a potential mechanism to finally unlock those funds for broader use.

The bulk of the immobilised Russian central bank assets within the EU — estimated to be in the hundreds of billions of euros — are held at Euroclear, the Brussels-based financial infrastructure giant. While the interest generated on those frozen assets has already been channelled in part toward Ukraine’s reconstruction and defence needs, the underlying principal remains untouched, caught in a web of legal uncertainty and competing national interests.

Breaking the Political Impasse

The core obstacle has long been Belgium’s reluctance to act unilaterally. Belgian authorities have expressed repeated concerns about legal liability, the risk of retaliatory measures against Belgian financial institutions, and the potential precedent that seizing sovereign assets could set for the international financial order. Those concerns have not disappeared, but proponents of an EU custodian model argue that distributing responsibility across a supranational body could alleviate the pressure on any single member state.

Under the custodian concept, according to reports, a dedicated EU-level entity would assume formal guardianship of the frozen assets, effectively shielding Belgium and Euroclear from direct legal exposure. This structural shift, supporters contend, would allow policymakers to move beyond the current impasse without requiring Belgium to make a unilateral political decision that its government has so far been unwilling to take.

The idea has not been universally welcomed. Legal scholars and central banking officials have cautioned that even a supranational custodian arrangement would face significant challenges under international law, particularly given that the assets in question belong to the Russian central bank rather than the Russian state directly. Any outright transfer or confiscation, critics warn, could invite challenges at international arbitration tribunals and undermine confidence in the euro as a reserve currency.

The debate also unfolds against a shifting geopolitical backdrop. With peace negotiations regarding Ukraine remaining deeply uncertain and Western unity showing occasional cracks, the urgency felt by some European capitals to deploy the Russian funds more aggressively is being tempered by caution from others who favour preserving maximum diplomatic flexibility. Officials in several EU member states have signalled that any final decision on the asset principal would need to be coordinated carefully with G7 partners, particularly the United States.

For now, the interest revenues — running to several billion euros annually — continue to flow through agreed mechanisms, providing Ukraine with a meaningful, if limited, financial lifeline. Whether the custodian proposal can command the political consensus needed to move the broader debate forward remains to be seen. European Commission officials have previously indicated an openness to exploring new legal frameworks, but no formal legislative proposal has yet been tabled. With the war entering its fourth year and reconstruction costs mounting, pressure on EU institutions to find a more durable solution is unlikely to ease anytime soon.