Chinese President Xi Jinping issued a warning to President Donald Trump during their high-stakes summit in Beijing, saying that if the issue of Taiwan is handled "improperly," the two nations could "come into conflict," according to China's official state broadcaster Xinhua. The trip came at a crucial time for Trump as the war with Iran loomed and was leading to economic consequences for Americans at home. China is Iran's principal oil consumer. Particularly thorny for China is the issue of Taiwan and the U.S. position on the matter has long been delicate. However, Xi did say that if the issue is handled "properly," "bilateral relations can remain generally stable." After a dramatic welcoming ceremony, Trump sat down with Xi on the first day of a multi-day summit, during which Trump said he'd seek to deepen diplomatic and economic ties between the world's two largest economic powers.…