Chinese President Xi Jinping warned President Trump privately at their Beijing summit that Taiwan is the most important bilateral issue to China and that if it is mishandled, the two countries will "have clashes," according to NBC News. In public remarks, Xi called a stable U.S.-China relationship "good for the world" and said the two nations should be "partners, not rivals"; Secretary of State Marco Rubio said afterward that U.S. Taiwan policies remain "unchanged."