President Donald Trump’s national security adviser said Sunday that top administration officials will meet with European officials this week about how to end the war in Ukraine, nearly three years after Russia launched an all-out invasion. Vice President JD Vance will be in Paris on Monday for an artificial intelligence summit that’s gathering government officials and will head later in the week to the Munich Security Conference, where Ukrainian President Volodymyr Zelenskyy will lead the battle-weary country’s delegation. Secretary of State Marco Rubio, Defense Secretary Pete Hegseth and Trump’s special envoy on Ukraine and Russia, Keith Kellogg, will also be...