US President Joe Biden’s trip to South Korea and Japan last month has strengthened the relationship with such US allies as Japan, South Korea, Australia and India to checkmate China’s hegemony in the Indo-Pacific region. The key plank of his policy platform is that the US would intervene militarily if China were to invade Taiwan. Did he misspeak? Not really. Biden had on three previous occasions mentioned the US policy of military intervention on behalf of Taiwan. His trip to Asia provides an opportunity to showcase such a policy on the international stage. Such a policy is not new. In Dec...