President” Biden made big news this morning with his announcement that the United States would defend Taiwan in the event of an invasion by China. See the triple-bylined AP story “Biden: US would intervene with military to defend Taiwan.” The AP reports from Tokyo: President Joe Biden said Monday that the U.S. would intervene militarily if China were to invade Taiwan, saying the burden to protect Taiwan is “even stronger” after Russia’s invasion of Ukraine. It was one of the most forceful presidential statements in support of self-governing in decades. Biden, at a news conference in Tokyo, said “yes” when...