Principal Deputy Assistant Secretary Heffern, a career member of the Senior Foreign Service, served as the U.S. Ambassador to Armenia from 2011-2014. His prior experience included Deputy Chief of Mission (DCM) at USNATO, Brussels; DCM in Jakarta, Indonesia; and, Executive Assistant to the Under Secretary for Political Affairs. Other previous posts include: USNATO; Tokyo; Malaysia desk officer in Washington; Kuala Lumpur, Malaysia; Abidjan, Ivory Coast; and Guangzhou, China. From 1994-1996, Heffern served as a Pearson Fellow on the Asia Subcommittee for the House International Relations Committee.
Prior to entering the Foreign Service, Heffern served in the office of Senator John C. Danforth (R-MO) as the Senator’s Office Director and Research Assistant. Heffern is a native of St. Louis, Missouri, and received a B.A. from Michigan State University.