The Project for the CTBT supports the work of NGOs and experts to build public and policymaker understanding of the CTBT.

In 1996, the United States was the first nation to sign the Comprehensive Nuclear Test Ban Treaty (CTBT), which “prohibits any nuclear weapon test explosion or any other nuclear explosion.” The CTBT helps curb the spread of nuclear weapons and establishes a global monitoring network to detect and deter cheating. The time for the CTBT is now.

Project News

20 Years Later: United States, Japan, and Kazakhstan Reaffirm Support For The CTBT

By Alicia Sanders-Zakre

The Stimson Center and the Arms Control Association hosted a panel discussion about the history and progress of the Comprehensive Test Ban Treaty (CTBT) 20 years after it was signed on September 24, 1996. To date, 183 states have signed the treaty.

Represented in the panel were senior officials from states that have been strong supporters of the treaty over the past 20 years.

Rose Gottemoeller, the undersecretary for arms control and international security and Adam Scheinman, the special representative of the president of nuclear nonproliferation reiterated the United States’ strong support for the CTBT and its entry into force. Under Secretary Gottemoeller remarked that the United States had been the first nation to sign the CTBT, although it has not yet been ratified by the Senate.

Key Takeaways from the Senate Hearing on the CTBT UNSCR Initiative

By Alicia Sanders-Zakre

The first Senate Committee on Foreign Relations hearing dealing with the Comprehensive Test Ban Treaty (CTBT) in over a decade took place on September 7th. Attendance was high, with Committee Chairman Bob Corker (R-Tenn.) presiding, ranking Democrat Senator Cardin (D-Md.), and Senators Risch (R-Idaho), Rubio (R-Fla.), Flake (R-Ariz.), Perdue (R-Ga.), Menendez (D-N.J.), Shaheen (D-N.H.), Murphy (D-Conn.), Udall (D-N.M.), and Markey (D-Mass.) in attendance.

The hearing was convened to discuss the Barack Obama administration’s proposed United Nations Security Council Resolution (UNSCR) and P5 statement reaffirming support for the Comprehensive Test Ban Treaty (CTBT) and its international monitoring system, which is under discussion and is expected to be finalized in mid-September.

The committee heard testimony from Stephen Rademaker, a former State Department official in the George W. Bush administration, and testimony from Michael Krepon, co-founder of the Stimson Center.

The hearing provided several key takeaways on the UNSCR initiative and Senate views on the CTBT itself.

The Debate Over Obama’s UNSCR Proposal

U.S. President Barack Obama is seeking approval for a UN Security Council resolution to reinforce the norm against nuclear testing, in a move that would coincide with the 20th anniversary of the Comprehensive Test Ban Treaty (CTBT), which the United States signed in 1996.

The Washington Post columnist Josh Rogin quoted National Security Council spokesperson Ned Price as saying that while the administration would like to see the Senate ratify the CTBT, they are “looking at possible action in the UN Security Council that would call on states not to test and support the CTBT’s objectives. We will continue to explore ways to achieve this goal, being careful to protect the Senate’s constitutional role.”

Republican Senators Bob Corker (R-Tenn.) and Tom Cotton (R-Ark.) were quick to respond to the proposed UN Security Council resolution with statements of opposition, alleging that President Obama was "circumventing" Congress by going to the United Nations.

On Aug. 15, former Senator Jon Kyl (R-Ariz.)—a lead opposition figure against the CTBT—penned an op-ed with Douglas J. Feith of the Hudson Institute against the UN Security Council resolution initiative.

However, administration officials were quick to note that they "fully respect the Senate's role" toward ratification of the treaty, and that the UN Security Council resolution "is in no way a substitute for entry into force of the CTBT."

Looking Ahead in 2016

August 29: International Day Against Nuclear Tests and the 25th anniversary of the closure of the Soviet Semipalatinsk nuclear test site in Kazakhstan.

September 10: 20th anniversary of the special session of the UN General Assembly that overwhelmingly approved the 1996 CTBT by a margin of 158 to 3, with five abstentions, opening the way for signature and ratification.