P resident Donald Trump is scheduled on Monday to welcome Ukrainian President Volodymyr Zelenskyy to the White House for a high-stakes meeting as the U.S. president pushes for a deal to end Moscow's war on its neighbor. A host of European leaders will join the pair.

President Donald Trump’s pivot toward the Russian position on Ukraine after his summit in Alaska Friday with his Russian counterpart, Vladimir Putin, has set the stage for a dramatic confrontation at...