“It will take all of us working together – government officials, and diplomats, academic experts, and scientists, activists, and organizers – to come up with new and innovative approaches to strengthen transparency and predictability, reduce risk, and forge the next generation of arms control agreements.”
– Wendy Sherman
U.S. Deputy Secretary of State
June 2, 2022
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:

  • Prospects for Realizing the Full Potential of the CTBT
    September 7, 2012

    Since the opening for signature of the CTBT nearly sixteen years ago, the vast majority of the world’s nations have signed and ratified the Treaty. They recognize that nuclear testing is a dangerous and unnecessary vestige of the past and understand that the CTBT is a cornerstone of the international security architecture of the 21st century.

  • Nuclear Testing Index, August 29, 2012
    September 4, 2012
  • Marking the International Day Against Nuclear Tests
    September 4, 2012

    Today is the official International Day Against Nuclear Tests, established in 2009 on the anniversary of the closure of the main former Soviet test site of Semipalatinsk, where more than 456 nuclear explosions contaminated the land and its inhabitants.

  • Marshall Islands People Still Suffering Decades After U.S. Nuclear Testing
    May 3, 2012

    From 1946-1958, the United States conducted a series of 67 atmospheric nuclear test explosions in the South Pacific that devastated the indigenous peoples in the Marshall Islands. During most of that time, the Marshall Islands was a part of the United Nations Trust Territory of the Pacific Islands administered by the United States.

  • North Korea Poised to Conduct Third Nuclear Test Explosion
    May 3, 2012

    No sooner than it had pledged on February 29 to halt long-range ballistic missile tests, nuclear testing, and uranium enrichment at its Yongbyong nuclear facility, the North Korean regime announced it would launch a long-range ballistic missile-ostensibly to lift a satellite into orbit. The April 12 launch failed shortly after liftoff, the fourth such long-range missile test failure.

  • NAS Report Raises Awareness, Underscores Value of CTBT
    May 3, 2012

    The March 30 release of the National Academy of Sciences (NAS) report on the Comprehensive Test Ban Treaty (CTBT) generated significant media attention, several opeds, and welcoming statements from key senators.

  • NAS Report Builds Technical Case for CTBT Approval
    March 30, 2012

    Today, the U.S. National Academies of Science released its long-awaited update on technical issues related to the CTBT in Washington.

  • North Korea Pledges to Refrain from Further Nuclear Tests and Halt Other Nuclear, Missile Activities
    February 29, 2012

    On February 29, the U.S. State Department announced that the Democratic Peoples Republic of Korea (DPRK) has agreed to implement a moratorium on nuclear weapon test explosions, long-range missile launches and other nuclear activities, including enrichment at its Yongbyon nuclear complex and to allow U.N. nuclear watchdog inspectors in to ensure compliance.

  • As CTBTO Marks 15th Year, Test Monitoring Capabilities Exceed Earlier Expectations
    February 28, 2012

    The Comprehensive Test Ban Treaty Organization (CTBTO) celebrated its 15th anniversary February 17, 2012.

  • Study Alleges DPRK N-Tests in 2010; Findings Questioned
    February 3, 2012

    A paper in the March issue of the journal Science & Global Security titled "Radionuclide Evidence for Low-Yield Nuclear Testing in North Korea" by Lars-Erik De Geer, Research Director at the Swedish Defence Research Agency claims that North Korea may have carried out a very low-yield nuclear weapon test explosion in May 2010.