Alexander Vershbow became U.S. ambassador to Korea in 2005. He is a career member of the Foreign Service, and has extensive experience in East-West relations, non-proliferation and European security affairs. He was the treasurer in the State Department, special assistant to the president on national security affairs and senior director for European affairs of the National Security Council under President Clinton. He next became a U.S. Ambassador, then as a Russian specialist he served for four years as the ambassador to the Russian Federation.