Diplomats and officials react with outrage to new details of the U.S. peace plan, warning it could wreck their efforts to help Ukraine survive the war.

Donald Trump has hurled a wrench into one of the most sensitive negotiations currently under way in Europe, potentially derailing efforts to help fund Ukraine to stay in the fight against Russia.

For months European Union officials have been trying — and failing — to work out a way to use around €140 billion of immobilized Russian state assets held largely in Belgium to support Kyiv’s war effort. The cash is desperately needed as Ukraine is at risk of running out of money early next year.

Talks in Brussels are now at an extremely delicate stage, diplomats said, as top officials try to finesse a legal text that would enable the frozen funds to be used for a loan to the Ukrainian government.