The president, who had said a deal to end the war could be reached soon, expressed frustration over lack of progress and signaled he would pause his efforts.

Political messages don’t get much blunter than the Russian missiles that slammed into an American-owned manufacturing firm overnight Wednesday in western Ukraine, hundreds of miles away from the frontline trenches of a war with no end in sight.

Recent optimism for peace has faded, and President Trump is looking for new answers.