Why the South China Sea Could Spark a US-China War

The Phillipines and the US are in the midst of joint military exercises near the South China Sea and Taiwan, sparking anger from Beijing. This year's war games are taking place at a time of increasingly strained relations between China and the Philippines. Maritime encounters between the countries have become more frequent, with China's recurring use of water cannons damaging Philippine boats. Why are tensions escalating almost two years into Ferdinand Marcos Jr.'s presidency? And what are the implications for the US and the rest of the world?