The George W. Bush presidency has raised wide speculation about future United States' policy toward the Korean peninsula. The conventional wisdom among pundits in Washington, Seoul and elsewhere is that the incoming administration will switch to a ‘harder line’ regarding the Democratic Peoples' Republic of Korea (DPRK) and move away from the engagement policy practiced during the Clinton administration. In a similar vein, others have argued that Bush will place a premium on reaffirming and consolidating ties with traditional allies and friends like the Republic of Korea (ROK), Japan, and Taiwan while downplaying strategic engagement with China. The problem with such punditry is that it is usually overstated and under analyzed. Given the current state of relations, there is little incentive for dramatic changes in U.S. policy toward North Korea or with regard to the U.S.-ROK alliance. Moreover, given what is known of the Bush administration's foreign policy vision, there is little evidence upon which to predict an unadulterated hard line swing in policy toward Pyongyang.

The year 2012 was fascinating for domestic politics and international relations in Northeast Asia. Perhaps most notably, every country in the region experienced a change of leadership. China, Russia, North Korea, South Korea, and Japan all saw new leaders begin their tenure. In addition, regional relations took a turn for the worse, with numerous countries engaging in territorial and maritime disputes, disagreeing over interpretations of their shared histories.

Korea is one of the most complex, critical, and yet understudied of Japan's foreign policy relationships. While much attention in US policy and academic circles has focused on Japan's future relations with China as the key variable for regional stability in the twenty first century, an integral part of the security dynamic in East Asia has been driven by the Japan–Korea axis. In the late-nineteenth century and early twentieth century, two major power wars in Asia (i.e., Sino-Japanese and Russo-Japanese) had this relationship as a proximate cause. During the cold war, the Japan–Republic of Korea (ROK) axis facilitated the American presence as an Asia-Pacific power and security guarantor. And in the post-cold war era, outcomes in the Japan–Korea (united or still divided) relationship are critical to the shape of future balance of power dynamics in the region and with it, the future American security presence. How then should we be thinking about future Japanese relations with the Korean peninsula? What are Tokyo's hopes and concerns with regard to Korea? How do they view the prospect of a united Korea? Is there a Japanese ‘grand strategy’ regarding the peninsula?