Joel S. Wit is concurrently a Senior Fellow at the Stimson Center and Director of 38 North. He is also a Senior Research Fellow at Columbia University Weatherhead Institute for East Asian Studies. He worked for 15 years in the U.S. Department of State on arms control and non-proliferation issues. From 1995-2001 he was the Coordinator for Implementation of the US-North Korea Agreed Framework. After leaving the State Department, he was a Senior Fellow at the Center for Strategic and International Studies. Mr. Wit is the co-author of Going Critical: The First North Korean Nuclear Crisis published by the Brookings Institute Press in 2004. He has also written numerous journal and newspaper articles on North Korea as well as appearing on television and radio.