Key Officers

Mr. Anderton joined UNVIE as IAEA Counselor in August 2017. He was previously Political Counselor at the U.S. Embassy in Bangkok, Thailand.

Prior to that, he served as Deputy Political Minister in Beijing, China, Deputy Director for Scandinavia and the Baltic States in Washington, DC, and First Secretary at the U.S. Mission to NATO, where he oversaw the NATO-Russia Council.

Other assignments include Russian Foreign Policy expert in the State Department’s Office of Russian Affairs, Economic Officer and later Senior Staff Assistant to Ambassador Thomas Foley at the U.S. Embassy in Tokyo, Japan, and Oil and Natural Resources Officer at U.S. Embassy in Moscow, Russian Federation.

Prior to joining the Foreign Service, Mr. Anderton was briefly an academic, with postdoctoral fellowships at both the Free and Technical Universities in Berlin, Germany. He was a Fulbright Scholar to Tokyo University in 1986, and a visiting lecturer in the Values, Technology, Science and Society program at Stanford University in 1991.  He holds Ph.D. and M.A. degrees from Harvard in the History of Science and Astrophysics, respectively; and a Bachelor’s degree in Theoretical Physics from Princeton.

Mr. Anderton speaks Chinese, Russian, Japanese, German, French, and Thai. He is married to Frances Therese Anderton and has three children.

Since 2016, Susan Ball has served as a Senior Advisor in the Bureau of International Narcotics and Law Enforcement Affairs.  Prior to this, Ms. Ball was a Career Foreign Service Officer for over two decades, where she developed an expertise in European security issues.

Among her assignments, Ms. Ball served as the Coordinator for the Organization for Security and Cooperation in Europe; Acting Deputy Chief of Mission in Bratislava for 18 months; Political-Economic Chief in Bratislava; Senior Country Officer for France; Political-Military Officer in Rome; Analyst for Greece and Cyprus in the Bureau of Intelligence and Research; Operations Officer in the State Department’s Operation Center, Entry-level to Mid-level Transition Coordinator in the Bureau of Human Resources; and, as a Senior Fellow at the Atlantic Council.

Erik Martini arrived in Vienna in August, 2016 as the Mission’s Arms Control Counselor, which has primary responsibility for covering nuclear disarmament, the Comprehensive Nuclear-Test-Ban Treaty, the Nuclear Supplier’s Group, the Wassenaar Arrangement, and the Hague Code of Conduct Against Ballistic Missile Proliferation. He is the alternate U.S. Representative to the CTBT Preparatory Commission and focuses on matters related to preparations for CTBT entry-into-force.

Prior to his posting in Vienna, he was Political and Economic Section Chief in Lahore, Pakistan, Deputy Chief of the Political and Economic Section in Yaounde, Cameroon and also served as a Watch Officer in the State Department’s Operations Center in Washington DC. Previous postings include Quito, Ecuador and Chennai, India.

Before joining the State Department, Erik was a commercial litigator for McGuire Woods LLP in its Baltimore office. He obtained his undergraduate and law degrees from the University of Wisconsin at Madison and, in between, served as a Peace Corps Volunteer in Guatemala and as a staff assistant to a Member of Congress in Washington.

Justen Thomas has served as Advisor for Public Affairs at the U.S. Mission to International Organizations in Vienna since July 2018. He previously worked as First Secretary and Deputy Public Affairs Officer at the U.S. Embassy in Havana, Cuba from August 2016 until June 2018.

Prior to that, Justen was the Spanish and Portuguese-language Spokesperson for the Department of State, working from the Department’s Media Hub of the Americas in Miami, Florida. Other assignments include Staff Assistant in the Bureau of Western Hemisphere Affairs in Washington, D.C., Assistant Cultural Affairs Officer at the U.S. Embassy in Brasilia, Brazil, and Vice-Consul at the U.S. Embassy in Paris, France.

Justen holds a Master of Science degree in International Development from the University of Bristol, England and a Bachelor of Arts degree in Economics, International Relations, and Spanish from the University of Wisconsin.