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"[Arms Control Today] has become indispensable! I think it is the combination of the critical period we are in and the quality of the product. I found myself reading the May issue from cover to cover."

– Frank von Hippel
Co-Director of Program on Science and Global Security, Princeton University
June 1, 2018
Project for the Comprehensive Test Ban Treaty

Project for the CTBT Blog

The Project for the CTBT aims to support and coordinate the work of NGOs and policy, scientific and security experts in order to provide the public and policy-makers with sound information and analysis about the Comprehensive Test Ban Treaty. The following updates provide news and analyses on the status of the treaty and work of the CTBT Organization. To receive these by email, subscribe to our regular updates list.

Quick References:
  • “It is Almost Certain that the U.S. Will Not Test Again,” Says Former NNSA Administrator
    December 6, 2011
    Amb. Linton Brooks, the Administrator of the National Nuclear Security Administration during the George W. Bush administration, said there is practically no chance of the United States resuming nuclear testing.
  • Indonesian Ratification of the CTBT Provides New Momentum for Entry Into Force
    December 6, 2011
    Today, the Indonesian parliament approved the ratification of the 1996 Comprehensive Test Ban Treaty, bringing the number ratifications necessary for entry into force down from 9 to 8.
  • New "Close the Door on Nuclear Testing" Campaign Launched
    September 26, 2011
    The CTBTO is inviting people the world over to submit their video messages and photos explaining why they support a world without nuclear testing.
  • Nuclear Experts Propose Making CTBTO Institutions Permanent
    September 26, 2011
    A number of leading nuclear arms control proponents said last week that the international community should act promptly to make key features of the Comprehensive Test Ban Treaty permanent, despite a widespread view that the pact itself will not be formally implemented for many years to come.
  • 160+ States Meet Sept. 23 on CTBT Entry Into Force
    September 26, 2011
    Fifteen years after the CTBT was opened for signature, more than 160 senior government representatives gathered and 53 spoke at UN Headquarters to highlight the value of the Treaty and call upon the remaining 9 CTBT "hold out" states to sign and/or ratify to facilitate formal entry into force.
  • States Urge Action on CTBT at Sept. 2 Informal Session of UNGA
    September 14, 2011
    To mark the August 29 International Day Against Nuclear Tests, dozens of UN member states met for more than four hours at UN Headquarters in an informal session of the General Assembly on September 2.
  • Fmr. Energy Sec. O'Leary's LATimes Oped: "Ratify the CTBT"
    September 14, 2011
    In an op-ed in today's Los Angeles Times, former Energy Secretary Hazel O'Leary outlines the case for careful Senate reconsideration and ratification of the Comprehensive Test Ban Treaty.
  • International Day Against Nuclear Tests: Translating Words Into Action
    August 28, 2011
    August 29, 2011 is the second official International Day Against Nuclear Tests. It coincides with the 20th anniversary of the historic events that led to the closure of the former Soviet nuclear test site of Semipalatinsk, where more than 456 explosions contaminated the land and its inhabitants.
  • The Pentagon's Role in Nuclear Test Monitoring
    July 15, 2011
    The U.S. Atomic Energy Detection System (USAEDS), a sensor system established in 1947, is capable of detecting nuclear explosions that occur under land or sea, in the atmosphere or in space,” according to a July 12, 2011 Department of Defense news report.
  • P5 Reiterate Commitment to CTBT
    July 1, 2011
    During a June 30th-July 1st NPT Review Conference follow-up meeting, the P5 (the five permanent members of the UN Security Council) reaffirmed their continued commitment to the Comprehensive Test Ban Treaty (CTBT).

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