“When President Volodymyr Zelensky of Ukraine met European leaders for dinner in Brussels on Wednesday, the shadow of President-elect Donald Trump hung over the gathering. But it is not just Mr. Trump’s return to the White House that has scrambled Europe’s response to the war in Ukraine,” the New York Times reports. “It is also the political disarray across the continent — a wave of instability that is depriving Europe of robust leadership at the very moment that Mr.