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. We shall soon discover whether it also means the beginning of the end for NATO and the further destabilization of a Europe unwilling to defend itself, or a rebalancing in which a revitalized Europe buttresses the Trump administration’s global strategy. It is time, Trump announced on his Truth Social app after talking with Putin, to stop a “ridiculous” war that has caused “massive, and unnecessary, DEATH and DESTRUCTION.” The common response from the leaders of seven European states, including Britain, France, and Germany, seemed more interested in the process than the peace: “Ukraine and Europe must be part of any negotiations.” There must be, Ukrainian President Volodymyr Zelensky added, “no talks about Ukraine without Ukraine.” Yet when direct negotiations between the United States and Russia began in Saudi Arabia on Feb. 18, the Ukrainians were not invited. Nor were the leaders of the European states there to settle a war they had helped to fund, and which some of them had defined, in British Prime Minister Keir Starmer’s words, as an “existential” struggle for the future of European democracy. (Illustration by Thomas Fluharty for the Washington Examiner) Excluded from the talks, French President Emmanuel Macron cobbled together an emergency meeting in...