WASHINGTON, Sept 24 (Reuters) - US President Donald Trump welcomed Chinese President Xi Jinping to the White House on Thursday for a lavish summit that was heavy on symbolism but light on substance, with no sign of breakthroughs on thorny issues such as AI, trade, Taiwan and the war with Iran. Trump and Xi traded warm rhetoric at a high-profile White House summit, but offered few signs of progress on Taiwan, AI, trade and the Iran war.
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