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Comprehensive Test Ban Treaty (CTBT)

  • Fact Sheets & Briefs
    March 1, 2014

    March 2014

  • Press Room
    February 26, 2014

    (Washington, D.C.) March 1 is the anniversary of one of the most controversial and harmful of the United States' 1,030 nuclear weapons test explosions: the 15-megaton atmospheric thermonuclear shot code-named "Castle Bravo" over Bikini Atoll in the Marshall Islands.

  • Arms Control Today
    December 4, 2013

    The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) announced Nov. 13 that four medical isotope makers have pledged to reduce radioxenon emissions, a step that the organization said would help it in its mission of identifying nuclear test explosions.

  • Arms Control Today
    October 2, 2013
  • Press Room
    September 27, 2013

    (New York/Washington) -- At a meeting of more than 100 senior government officials at the United Nations to discuss pathways to bring the 1996 Comprehensive Nuclear Test Ban Treaty into force, a diverse set of nongovernmental nuclear nonproliferation and disarmament leaders, as well as former government officials and diplomats are calling on all states to translate their words of support for the Treaty into concrete action.

  • Arms Control Today
    July 2, 2013

    The U.S. president laid out his arms control agenda, prompting a cool reply from Russia and a partisan reaction from Capitol Hill.

  • Arms Control Today
    July 1, 2013

    In his June 19 address in Berlin, President Barack Obama sought to jump-start progress on his second-term nuclear risk reduction agenda. The president declared,”[S]o long as nuclear weapons exist, we are not truly safe. Peace with justice means pursuing the security of a world without nuclear weapons, no matter how distant that dream may be. Complacency is not in the character of great nations.”

  • Press Room
    June 19, 2013

    President Barack Obama's proposals today in Berlin for cutting the oversized U.S. nuclear arsenal and reducing global nuclear weapons dangers are welcome and overdue.

  • Arms Control Today
    June 3, 2013

    The impact of President John F. Kennedy’s June 1963 “Strategy of Peace” speech at American University can be seen in the events of the years that followed and in the language that Kennedy’s successors used in speaking about nuclear weapons policy.

  • Arms Control Today
    April 2, 2013

    A ban on nuclear testing has long been and continues to be a key part of a comprehensive, effective U.S. nuclear risk reduction strategy. Four years ago on April 5, President Barack Obama said in Prague, “After more than five decades of talks, it is time for the testing of nuclear weapons to finally be banned.”