"With over five decades of involvement in nuclear weapons technology, Richard Garwin has advised U.S. administrations - both Republican and Democrat - on a range of issues including the safety of nuclear weapons and arms control. Garwin has spent much of his career promoting nuclear disarmament and warning about the need to halt the proliferation of nuclear weapons. Garwin testified before the U.S. Senate in 1999, when the issue of ratification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) was discussed: ""I agree with those U.S. military leaders who have reviewed the benefits and costs to U.S. security from a CTBT and strongly support the Treaty. Our national security will be improved by ratification and impaired by further delay.""In his interview at the Science & Technology Conference 2011 hosted by the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), he talks about the evolution of test-ban verification technologies and why he thinks that the CTBT is effectively verifiable.--- More on the 2011 Science & Technology conference: http://www.ctbto.org/specials/ctbt-science-and-technology-20118-10-june-2011-vienna-austria/ctbt-science-and-technology-2011/"