US leader Donald Trump personally urged President Xi Jinping to help end the Ukraine war, as he sought to lean on Beijing’s sway over Moscow to resolve a conflict that is now in its fifth year, multiple sources have said. According to people familiar with the discussions at last month’s leaders’ summit in Beijing, Trump told Xi that Russia-Ukraine negotiations were stalled and pressed him to bring Russian President Vladimir Putin back to the table to negotiate with Ukrainian leader Volodymyr...