Abstract
In the nine years after the inauguration of the Lee Myung-bak administration in February 2008, the consensus regarding the alliance between the Republic of Korea (ROK) and the United States was that it “couldn’t be better.” Yet with the inauguration of new administrations in both capitals, despite the reaffirmation of each side’s commitment to the alliance, there are some concerns and anxieties over North Korea policy, the implications of China’s rise for the regional security architecture, and alliance management. In general, the United States is concerned about the possibility that Moon Jae-in will revive Roh Moo-hyun’s Sunshine Policy of engagement with North Korea as well as adopt a pro-Chinese orientation and encourage anti-American sentiment. On the other hand, the ROK has concerns about the Trump administration’s protectionism, hostile policy toward North Korea that eschews dialogue, unilateralism in the military sphere, and demand for greater burden-sharing.
 
To maintain, strengthen, and upgrade the U.S.-ROK alliance, both Seoul and Washington should work very closely to increase trust and mutual respect and to iron out possible differences over the aforementioned issues. The following discussion will examine the two allies’ areas of convergence and divergence on North Korea policy, China’s rise, and alliance management. It will then conclude by assessing the prospects for the U.S.-ROK alliance in the aftermath of political transitions in both countries.
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