Abstract: This article gives a broad description of the Japanese second Abe government’s reassurance, arming, and alliance policy toward China. The sources used are mostly elite interviews, newspaper articles, and books from Japan. It gives a realist analysis but also looks at New Komeito’s influence within the coalition government on topics such as the adoption of principles for collective self-defense. While retaining major elements of the defensive realist Yoshida Doctrine, the direction of policy change has been toward a more assertive policy. Japanese perceptions of China’s capabilities and intentions and of the offensive or defensive advantage of the geography of the Nansei Islands and Chinese anti-ship ballistic missiles give an explanation for the shift in policy.