He is firm in the US-camp:
"Ban's first overseas posting was to New Delhi, India. After working in the United Nations Division at headquarters, he served as First Secretary at the Permanent Observer Mission of South Korea to the UN in New York City. He subsequently assumed the post of Director of the United Nations Division. He has been posted twice to the ROK Embassy in Washington D.C. Between these two assignments he served as Director-General for American Affairs in 1990-1992. He was promoted to the position of Deputy Minister for Policy Planning and International Organizations in 1995. He was then appointed National Security Advisor to the President in 1996, and assumed the office of Vice Minister in 2000. His most recent post was as Foreign Policy Advisor to the President Roh Moo-hyun".