Former senior adviser for East Asia policy at the U.S. Office of the Secretary of Defense James L. Schoff has joined Carnegie Endowment for International Peace (CEIP), the think tank has announced.

Schoff will continue his work on Japan and U.S.-Japan relations at Carnegie.

“In addition to his expertise on alliance and regional security issues, Jim’s work has shown a deep understanding of Japan’s history, economy, and politics,” Douglas Paal, vice president for studies, said in a statement.

At the Department of Defense, Schoff was responsible for strategic planning and policy development for relations with Japan and South Korea, where he also spearheaded regional security cooperation issues, including missile defense, disaster relief and maritime security.

Prior to joining the Department of Defense, Schoff served as director of Asia Pacific Studies at the Institute for Foreign Policy Analysis from 2003 to 2010.

Schoff’s appointment at Carnegie is supported by the Center for Global Partnership and the Mitsubishi Corporation.