U.S. President Joe Biden and Chinese President Xi Jinping traded barbs Monday over Taiwan, with Xi stressing that the question of the self-ruled island is "the first red line that must not be crossed," but agreed to develop "principles" to manage their intensifying competition.In their first in-person summit, which took place in Indonesia's Bali, Biden expressed objections to China's "coercive and increasingly aggressive actions" toward Taiwan, saying they undermine peace and stability across the Taiwan Strait and jeopardize global prosperity, according to the White House.Their marathon tal…READ FULL ARTICLE