Pifer_FinalAmbassador Steven Pifer is director of the Brookings Arms Control Initiative and a senior fellow with the Center for 21st Century Security and Intelligence and the Center on the United States and Europe in the Foreign Policy program at Brookings. He focuses on arms control, Russia and Ukraine, and regularly comments on these issues in the media. He is co-author of The Opportunity: Next Steps in Reducing Nuclear Arms.

A retired Foreign Service officer, his more than 25 years with the State Department included assignments as deputy assistant secretary with responsibilities for Russia and Ukraine, ambassador to Ukraine, and special assistant to the president and senior director for Russia, Ukraine and Eurasia on the National Security Council. In addition to Ukraine, he served at the U.S. embassies in Warsaw, Moscow and London as well as with the U.S. delegation to the negotiation on intermediate-range nuclear forces in Geneva.