
Following Japan's defeat in World War II, the United States took pains to ensure that Japanese militarism could never again pose a threat to the Asia-Pacific or the world. As in Germany, these efforts were profoundly successful. For almost eight decades, Japan has eschewed foreign adventures and violent conflict. Pacifism was not only enshrined in its constitution; it also became deeply rooted in its political culture. By relying on America and its network of alliances and global partnerships, Japan could focus on itself, building economic strength rather than military, emerging as one of the world's largest and most advanced economies.
But over the past decade or so, the geopolitical environment has grown more dangerous, and Japanese leaders have increasingly recognised the need for a change. Some have proposed abolishing Article 9 of the constitution, which stringently limits the use of force in self-defence. This has been a contentious topic, owing to sharp divisions on the matter within the Japanese electorate. Nonetheless, in the face of threats such as North Korea's nuclear programme and Chinese revisionism, public support for deepening Japan's defence-policy coordination with America has grown.