MOSCOW/WASHINGTON — US President Donald Trump spoke to Russia's Vladimir Putin on Monday about peace in Ukraine after Washington said there was an "impasse" over ending Europe's deadliest conflict since World War II and that the United States may have to walk away. Trump, who says he wants to be remembered as a peacemaker, has repeatedly called for an end to the "bloodbath" in Ukraine, which his administration casts as a proxy war between the United States and Russia. Under pressure from T