President Donald Trump’s phone call with Russian President Vladimir Putin on Feb. 12 marked the beginning of the end of the three-year war in Ukraine. It also opened a new phase in America’s trans-Atlantic relations.

As we hit the three-year mark since the invasion of Ukraine by Russian forces, Europe and NATO appear to be at their most fractured and vulnerable.

Ukrainian President Volodymyr Zelenskyy offered to leave his post if the war with Russia ends and if the U.S. ally gets NATO membership. Michael Bociurkiw, a senior fellow at the Atlantic Council's Eurasia Center,