President Volodymyr Zelenskiy said on Tuesday Ukraine would support a U.S. proposal to stop its attacks on Russian energy infrastructure, but warned that Russia was trying to delay the U.S.-led negotiations and weaken Kyiv by making new demands.

The timing of the call was the most recent evidence of Ukraine being relegated to the back seat in talks about its future.

"Much of the discussion was based on the call made yesterday with President Putin in order to align both Russia and Ukraine in terms of their requests and needs," Trump said in a post on Truth Social.