Amb. John Tefft is a Senior Fellow at the RAND Corporation, a nonprofit, nonpartisan policy research organization. Prior to this, as a career Foreign Service Officer for 45 years, he served as the United States Ambassador to Russia (2014-2017), Ukraine (2009-2013), Georgia (2005-2009), and Lithuania (2000-2003). He also served earlier in Moscow as Deputy Chief of Mission (1996-1999), Rome (1986-1989), Budapest (1979-1982), and Jerusalem (1972-1974). He was the International Affairs Advisor (Deputy Commandant) of the U.S. National War College and the Deputy Assistant Secretary of State for European and Eurasian Affairs responsible for Eastern Europe.