The US Congress appears no closer to a deal ahead of a critical week for negotiations over funding for aid to defend Ukraine.

US lawmakers will leave for Christmas holidays in just a few days time and funding for defending against Putin is about to run out, with the lives of Ukrainians and the security of Europe and NATO allies at stake.

Republican Sen. James Lankford and Democrat Sen. Chris Murphy, who are leading the immigration and border negotiations, said in separate interviews on Sunday that talks are ongoing between the two sides, according to CNN.

Casting this point in negotiations as “one of the most dangerous moments” in American history, Murphy warned in stark terms about the national security implications of not reaching a deal.

“Vladimir Putin is delighting right now in Republicans’ insistence that we get a deal on immigration reform, and if we don’t, then they are going to allow Vladimir Putin to march into Ukraine and perhaps into Europe,” he said on NBC.

President Joe Biden sent a clear message to lawmakers Congress last week that he’s open to striking a compromise with Republicans on border security. While lawmakers from both sides of the aisle have expressed an openness to reaching a deal, the two sides still seem no closer to doing so.

With House Republicans demanding that the Senate-negotiated deal stick as close as possible to the House-passed border bill, HR 2, many Democrats have said that it’s a nonstarter.

White House budget director Shalanda Young, meanwhile, indicated in a separate interview on CBS Sunday that a deal was still possible, but warned that demands without compromise would tank negotiations.

“You can’t have everything your way in a negotiation. Democrats and Republicans have to vote for this bill. So I agree it’s time to cut a deal that both sides can agree to,” Young said.

First Lady of Ukraine, Olena Zelenska, has warned that Ukrainians are in "mortal danger" of being left to die if Western countries don't continue their financial support.