Trump's call with Putin undermines Ukraine's support, signaling a shift away from new sanctions and raises concerns among allies about the direction of U.S. foreign policy.

Trump expressed his hopes for a “productive day” Monday — and a ceasefire — in a social media post over the weekend. His effort will also include calls to NATO leaders. But ahead of the call, Vice President JD Vance said Trump is “more than open” to walking away from trying to end the war if he feels Putin isn't serious about negotiation.