The outlines of President-elect Donald Trump’s initial efforts to end the war in Ukraine from his visit to Europe last week are starting to emerge for the first time. The main takeaway: Europe would have to shoulder most of the burden of supporting Kyiv with troops to oversee a cease-fire and weapons to deter Russia. At a meeting in Paris on Dec. 7, Trump told Ukrainian President Volodymyr Zelensky and French President Emmanuel Macron that he doesn’t support Ukrainian membership of the North Atlantic Treaty Organization, but that he wanted to see a strong, well-armed Ukraine emerge from any cessation...