Japan has long prided itself on its pacifist constitution. The country's future after WW II was defined by Article 9 which famously denounced aggression. But, in recent years security has become a paramount concern with increasing tensions around the status of nearby Taiwan and challenges from neighbouring countries. The Japanese are now renegotiating how best to defend themselves and their interests, while holding true to constitutional restraint. What that could mean for the future of Japan and its allies is of global interest and concern.