CSIS:
Several decades ago, former Japanese Prime Minister Yasuhiro Nakasone once described his country as a “big aircraft carrier” from which to defend against Soviet aircraft.1 Although such an analogy fails to capture the richness and depth of the U.S-Japan alliance, it did say something important about Japan’s unique geographic and strategic position.
Today’s air and missile threats in the Asia-Pacific region are different, as is the joint U.S.-Japanese defense posture to meet them. Given a handful of changes underway, however, one might instead say that Japan is shaping up to be a giant Aegis destroyer group of sorts.
A vision of much more robust air and missile defense capability in the Asia-Pacific region hinges upon the forthcoming acquisition of Aegis Ashore sites in Japan. Japan’s intent to acquire two such sites was announced in December 2017, a decision supported by 66 percent of the Japanese population, according to one recent poll.
