A panel discussion on how the CTBT and its verification regime contributed to arms control and nonproliferation arrangements and what lessons should be drawn from the CTBT for future arrangements. Moderator: Laura Rockwood, Executive Director, Vienna Center for Disarmament and Non-Proliferation Panellists: James Acton, Senior Associate, Nuclear Policy Program, Carnegie Endowment Rebecca Johnson, Executive Director, Acronym Institute for Disarmament Diplomacy Zia Mian, Director, Project on Peace and Security in South Asia at the Program on Science and Global Security, Princeton Victor Slipchenko, former CTBT deputy chief negotiator for Russia Tibor Tóth, CTBTO Executive Secretary Emeritus