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Greg Thielmann

Greg Thielmann

Greg Thielmann has served more than three decades in the executive and legislative branches of government, specializing in political-military and intelligence issues. Before joining ACA in 2009, he worked for four years as a senior professional staffer of the Senate Select Committee on Intelligence (SSCI). He was previously a U.S. Foreign Service Officer for 25 years, last serving as Director of the Strategic, Proliferation and Military Affairs Office in the Department of State’s Bureau of Intelligence and Research. His foreign posts include Deputy Political Counselor of the U.S. Embassy in Brasilia, Brazil; Political-Military Affairs Officer in Moscow, USSR; and Political-Military Affairs Officer in Bonn, Germany. Thielmann also served as Deputy Director of the State Department’s Office of German, Austrian and Swiss Affairs; Special Assistant to Ambassador Paul Nitze (then Special Adviser to the President and Secretary of State on Arms Control Matters); and State Department advisor to the U.S. Delegation at the Geneva INF arms control negotiations. Greg is a member of the Council on Foreign Relations and a former member of the Board of Directors of the Arms Control Association (2003-2005). His July 2003 appearance at an ACA press briefing on faulty intelligence assessments on Iraq’s WMD capabilities <http://www.armscontrol.org/events/iraq_july03> led to a CBS News 60 Minutes II segment <http://www.cbsnews.com/stories/2003/10/14/60II/main577975.shtml> titled “The Man Who Knew,” which won an Emmy Award for reporter Scott Pelley.

Greg Thielmann's primary research areas include:

Read more by Greg Thielmann:

  • The Missile Gap Myth and Its Progeny
    Arms Control Today
    May 3, 2011

    The misperceived "missile gap" became a significant issue during the period between the Soviet launch of Sputnik in 1957 and the U.S. presidential election of 1960. The story of how it arose and then quickly disappeared 50 years ago carries relevant lessons for assessing military threats today.
  • ACA Senior Fellow Discusses Next Steps in Arms Control
    ACA Events
    March 14, 2011

    Prepared Remarks by Greg Thielmann, Senior Fellow, Arms Control Association at Grinnell College Roundtable.
  • ACA Senior Fellow Talks Missile Defense at Penn State
    ACA Events
    March 3, 2011

    Prepared Remarks by Greg Thielmann, Senior Fellow, Arms Control Association at Penn State University.
  • Strategic Missile Defense: A Threat to Future Nuclear Arms Reductions?
    Threat Assessment Brief
    January 26, 2011

    With Russia’s ratification of the New Strategic Arms Reduction Treaty (New START), the stage is now set for new discussions between Washington and Moscow on further steps toward reducing the two states’ enormous nuclear arsenals that together comprise more than 90 percent of total nuclear weapons worldwide.  Based on statements in Russia’s ratification documents and the statements of Russian President Dmitry Medvedev, continued U.S.-Russian disagreements on missile defenses threaten to undermine those future talks.  U.S. policymakers need to consider ways to prevent strategic missile defense system development and deployment from becoming an obstacle to progress in enhancing stability and reducing nuclear dangers. In his latest Threat Assessment Brief, ACA’s senior fellow Greg Thielmann analyzes the nature of the U.S.-Russian missile defense challenge.
  • 365 Days, Zero Inspections: Ratify New START
    Issue Briefs
    December 3, 2010

    Volume 1, Number 40

    One year ago this Sunday the United States lost its ability to "look under the hood" of Russia's nuclear forces. U.S. on-site inspections in Russia ended last Dec. 5 along with the original Strategic Arms Reduction Treaty (START). Fortunately, the United States can restore those inspections by ratifying New START, which currently sits before the Senate.