Jason P. Gresh is a military fellow at the Center for Strategic and International Studies (CSIS). Colonel Gresh has been serving for the last 12 years as a foreign area officer, specializing in Eastern Europe and Eurasia. Colonel Gresh most recently served as the chief, Russian deconfliction cell, Combined Joint Task Force—Operation Inherent Resolve (CJTF-OIR), where he helped prevent unnecessary escalation between CJTF-OIR and Russian forces in Syria. Prior to this, he served as chief, Office of Defense Cooperation at the U.S. embassy in Tallinn, Estonia, where he executed various forms of U.S. security cooperation with the government of Estonia.
Colonel Gresh previously served at the United States European Command in Stuttgart, Germany, where he served as the Eurasia regional branch chief for J5—Strategic Plans and Policy. Prior to that, he was assigned as the assistant army attaché at the U.S. Embassy in Kyiv, Ukraine, witnessing Ukraine’s Maidan revolution as well as the subsequent Russian annexation of Crimea and intervention in Eastern Ukraine. He has also served in Dushanbe, Tajikistan and Tbilisi, Georgia. Colonel Gresh started his Army career as an armor officer and served with the first squadron, third armored cavalry regiment at Fort Carson, Colorado as well as with the first infantry division in Germany. He holds a M.A. in Russian and East European studies from Georgetown University and a B.S. in civil engineering from the United States Military Academy.