Trump said he would end the war in Ukraine within his first 24 hours in office. His patience with Russia's Putin now appears to be wearing thin.

An audio recording from 2024 run by CNN in which Trump said he had threatened Putin with bombing Moscow if he entered Ukraine, plus the U.S. leader's latest criticism, could mean a tougher stance by Washington toward Moscow is on the cards.

A bipartisan U.S. bill that would hit Russia with sanctions in a bid to pressure Moscow into good-faith peace negotiations with Ukraine has gained momentum this week in Congress, but it still lacks the presidential push it needs to get over the finish line.