The United States voted against a Ukrainian resolution, backed by most of Europe, demanding Russian withdrawal from Ukraine — a deep fissure between allies, and a sharp shift in American policy.

The U.S. is lobbying countries around the world to oppose a resolution brought forward at the UN General Assembly by Ukraine and European countries.

Europeans are debating additional funding and contemplating troops in Ukraine as American support appears ever more at risk.

NBC News’ Richard Engel, Former Deputy Assistant Secretary of Defense Evelyn Farkas, and Former U.S. Ambassador to Russia Michael McFaul join Katy Tur to express concerns about Trump’s deference towards Russia.

Whether they do so will likely determine the extent of Europe’s role in shaping a peaceful Ukraine. European diplomats privately say Trump’s broadside against Ukrainian President Volodymyr Zelenskiy last week—when he falsely said Ukraine started the war with Russia and labeled its leader a dictator—was disgraceful and reflected Russian disinformation.

Europe must seek to “achieve independence” from the United States, Germany’s likely next chancellor Friedrich Merz said after his opposition conservatives won elections on Sunday, in a vote that also saw surging support for the far-right.

Germany's election winner Friedrich Merz warned the United States on Monday against turning its back on allies but also urged Europeans to build up their own defence capabilities, saying it was now "five minutes to midnight for Europe".

Friedrich Merz could have one shot at fending off ascending populists and an increasingly hostile U.S., analysts say.