Abstract: The imperative in the Indo-Pacific region is to build a new strategic equilibrium pivoted on a stable balance of power. A constellation of likeminded states linked by interlocking strategic cooperation has become critical to help build such equilibrium. Japanese Prime Minister Shinzo Abe is the author of the “free and open Indo-Pacific” concept that the US is now pushing. But Japan faces important strategic challenges. To secure itself against dangers that did not exist when its current national-security policies and laws were framed, Japan must bolster its security or risk coming under siege. US security interests will be better served by a more confident and secure Japan that assumes greater responsibility for its own defense and for regional security. The US must encourage Japan, which has not fired a single shot against an outside party since World War II, to undertake greater national-security reforms. Peace in Asia demands a proactive Japan.