Updated June 2021 The Treaty on Open Skies allows for states party to the treaty to conduct unarmed observation flights over the territory of other states to foster inter-military transparency and cooperation. The United States, Canada, and 22 European countries including Russia signed the treaty in Helsinki on March 24, 1992. The United States Senate […]
Fact Sheet: Understanding the New START Agreement
Updated February 2024 Background The United States and Russia signed the New Strategic Arms Reduction Treaty (New START) on April 8, 2010. The United States ratified the treaty on December 22, 2011 and it entered into force on February 5, 2011. The Russian Federation extended the treaty on January 27, 2021 and the United States […]
Rex Tillerson on Nuclear Weapons Issues
During his confirmation hearing, Secretary of State-designate Rex Tillerson provided some of the first concrete indications of the incoming Trump administration’s positions on nuclear weapons issues. By and large, to the extent that Mr. Tillerson represents future stances of the Trump administration, his testimony was very encouraging on nuclear questions. This is particularly good news, […]
Executive Director John Tierney’s Op-Ed in US News
Read the full op-ed in US News. Barring any unexpected events, Gen. James “Mad Dog” Mattis will be the next United States secretary of defense. Since President-elect Donald Trump announced the appointment, Mattis has been something of a unifier in Washington. Mattis will have a lot on his hands when he takes over the Pentagon, […]
Center Contributor Dr. Jim Walsh Quoted in WJLA
Read the full piece in the WJLA. “You don’t make pronouncements about nuclear policy or nuclear doctrine over Twitter,” said Jim Walsh, a professor at the MIT security studies program and contributor at the Center for Arms Control and Non-Proliferation. “When you do that, you’re likely to upset your allies, particularly European allies, and you […]


