Chinese President Xi Jinping landed at Joint Base Andrews late Wednesday afternoon after a 15-hour flight where he was greeted on the tarmac by US President Donald Trump in an unprecedented move for a top American leader.The closely watched visit – Xi’s first summit in the United States in 11 years – comes as the two nations grapple with a host of thorny issues beneath the flowery language and statements of friendship, including artificial intelligence, critical minerals, tariffs, Ukraine, the...