The complex situation in East Asia and the wider Pacific-Indian Ocean Region is prompting governments to deploy a full range of tools, from economic diplomacy to humanitarian relief operations to declarations of exclusive air space, in their search for a balance between what they consider to be their key national interests and their shared wish to avert open conflict. Tokyo is one of these actors who feel compelled to defend their national interests while at the same time recognizing that war would imply harsh costs, to itself and the region, at many levels, from the human to the economic to the political. While many Asian leaders have expressed the wish to see tensions ease and differences settled without recourse to violence, all understand the high risk of conflict and look to higher levels of military preparedness to enhance their position. Japan is no exception. Japan is unique, however, in moving to reinforce military capabilities despite a restrictive legal and constitutional framework. The development of an amphibious capability by the SDF (Self-Defense Forces), their latest drills featuring among others shore-based anti-ship missile deployment, more frequent joint exercises with the US and appeals to Washington for a firmer position in the Pacific, a push for constitutional change involving the reinterpretation or formal amendment to Article 9, and repeated public references to the late Margaret Thatcher, former British prime minister, illuminate the military leg in Tokyo's conflict prevention and management strategy. This paper seems to examine these factors, on the understanding that developments in the military sphere are only part of Tokyo's foreign policy towards East-Asia.