EU foreign policy chief Kaja Kallas said Monday there was "broad support" among member states for a new 140-billion-euro ($163-billion) loan for Ukraine funded by frozen Russian central bank assets.
The European Commission has put forward the plan for a "reparation loan" to keep financing Kyiv, and is seeking to win over major doubter Belgium, where the bulk of the assets are held.
"There was a broad support today to get this done, and it is crucial that we make progress on addressing the legal and fiscal modalities," Kallas said after talks by EU foreign ministers.
EU leaders are set to discuss the loan at a summit in Brussels on Thursday and officials are hoping they will give a greenlight for a more detailed legal proposal to be drawn up.
"The reparation loan can send a very powerful message to Moscow that it can't outlast us," Kallas said.
One of the main obstacles to the loan remains Belgium, which is demanding guarantees from its EU counterparts that they will share any potential liabilities.
The vast majority of the 200 billion euros of Russian central bank assets frozen in the EU are held by international deposit organisation Euroclear in Belgium.
French foreign minister Jean-Noel Barrot said that the loan could keep Ukraine afloat and in the fight against Moscow for the coming three years.
After lobbying from Paris, Brussels is proposing that the bulk of a potential loan be used to buy European weapons.