The first face-to-face summit talks between U.S. President Joe Biden and Chinese President Xi Jinping on Monday was important progress concerning Washington's desire to keep lines of communication open with Beijing, amid intensifying competition between the world's two largest economies.But there seems to be no silver bullet for easing tensions, particularly over Taiwan, which Xi -- emerging from last month's twice-a-decade Communist Party congress having consolidated his grip on power -- has vowed to reunite with the mainland, by force if necessary.Friction could be intensified by discussi…READ FULL ARTICLE