Both the US and Russian sides have confirmed that Presidents Donald Trump and Vladimir Putin will hold another phone call on Tuesday. Trump previewed that he plans to continue discussions to end the war in Ukraine, and he cryptically referenced negotiators having already discussed "dividing up certain assets."

"I'll be speaking to President Putin on Tuesday. A lot of work's been done over the weekend," Trump told reporters on Air Force One while en route back from Florida to Washington.

"We want to see if we can bring that war to an end. Maybe we can, maybe we can't, but I think we have a very good chance," Trump said.

The US is still proposing a 30-day temporary ceasefire, which Putin has already questioned as a likely means by which Ukrainian forces can simply rearm, replenish, and regroup.