News Analysis Beijing’s increasing belligerence toward Taiwan voids the “one China” policy and prior arms sales limitations, which should be increased to maintain the military balance and keep the peace. On Oct. 21, President Joe Biden vowed that America would defend Taiwan against any future Chinese attack on the island. In August, Biden called the U.S. defense of Taiwan a “sacred commitment.” Taiwan’s foreign ministry called it a “long-time promise.” This is indicative of an unpublished U.S. commitment to Taiwan to defend the islands. It would not be the first time the United States assured Taiwan of something but did not announce it to the public. With this American red line on Taiwan, new or old, now becoming public, it should be abundantly clear that the main existing policies on Taiwan—constituted by a set of agreements with Beijing called the Three Communiques, along with the Six Assurances to Taiwan and …