Green previously served as senior vice president for Asia, Japan Chair, and Henry A. Kissinger Chair at the Center for Strategic and International Studies (CSIS), as well as Director of Asian Studies and Chair in Modern and Contemporary Japanese Politics and Foreign Policy at Georgetown University. He served as Special Assistant to the President for National Security Affairs and Senior Director for Asian Affairs at the National Security Council (NSC) from January 2004 to December 2005 under George W. Bush.
Green previously held senior vice president positions in Asia, Japan Chair, and Henry A. Kissinger Chair at CSIS, as well as Director of Asian Studies and Chair in Modern and Contemporary Japanese Politics and Foreign Policy at Georgetown University. He served in important national security roles from January 2004 to December 2005 under George W. Bush.