Steven Pifer is an affiliate at Stanford University's Center for International Security and Cooperation. He also serves as a senior fellow at the Brookings Institution's Center on the United States and Europe, where he directs the Arms Control Initiative.
His distinguished career includes serving as the third United States Ambassador to Ukraine from 1998 to 2000. From 1978 to 2004, he was a foreign service officer with the U.S. Department of State, holding positions at the U.S.