Here is one way to enhance Japan's security: reconciliation with South Korea.
Since taking office in December 2012, Japanese Prime Minister Shinzo Abe has shown himself to be a strong political leader and a keen strategic thinker. Agreement on new U.S.-Japan defense guidelines, scheduled to be reached next week, and a deal with Washington on the Trans-Pacific Partnership will further strengthen his reputation and standing. But Abe’s most prudent geostrategic move is the one that he has not yet made: reconciliation with America’s other close ally in Northeast Asia, South Korea.