Nuclear Issues

Though nuclear weapons have not been used since 1945, their threat is omnipresent when nuclear powers join the battlefield. CSIS scholars analyze key nuclear policy issues including deterrence, escalation, and arms control.

Photo: © CORBIS/Corbis/Getty Images

Photo: © CORBIS/Corbis/Getty Images

Can the United States Immediately Return to Nuclear Testing?

President Trump’s post raises technical questions about how and if the United States could “immediately” return to nuclear testing, and political considerations about the signaling behind nuclear testing and who would benefit most from a return to testing.

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Critical Questions by Heather Williams — October 30, 2025

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Williams

Heather Williams

Director, Project on Nuclear Issues and Senior Fellow, Defense and Security Department
Victor Cha

Victor Cha

President, Geopolitics and Foreign Policy Department and Korea Chair
Joseph Rodgers

Joseph Rodgers

Deputy Director and Fellow, Project on Nuclear Issues

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Governing Uranium in the United States

As part of the global Governing Uranium Project headed by the Danish Institute for International Studies (DIIS), the Center for Strategic and International Studies (CSIS) analyzed U.S. experiences with the security of its “front-end” uranium industry.

Report by Sharon Squassoni and Stephanie Cooke, Robert Kim, and Jacob Greenberg — March 6, 2014

Syria's Chemical Weapons Destruction: It takes a Flotilla

In a few weeks, the U.S. vessel Cape Ray will set sail for the Mediterranean.  This 648-foot long ship will be engaged in serious business once it reaches its destination: destroying some 700 tons of Syrian chemical weapons.  

Critical Questions by Sharon Squassoni and Bobby Kim — January 13, 2014

New Nuclear Suppliers

Nuclear energy seemed set for revitalization until the accident at the Fukushima Daiichi nuclear power plant in 2011.

Report by Sharon Squassoni and Jacob Uzman — December 11, 2013

FYSA: For Your Situational Awareness

You can also find links to select upcoming and recent events, publications, media quotes, and multimedia produced by our scholars and staff.

Newsletter by Gregory Sanders, Sharon Squassoni, Samuel J. Brannen, and Kathleen H. Hicks — November 22, 2013

Workshop on South Korea as a Responsible Nuclear Supplier

The Center for Strategic and International Studies and the Asan Institute for Policy Studies cohosted a workshop on “Korea as a Responsible Nuclear Supplier” on February 18, 2013, at the Asan Institute in Seoul.

Report by Sharon Squassoni and Robert Kim — April 30, 2013

Dealing with a Nuclear Iran

Both the Bush and Obama administrations have attempted to end the threat posed by Iran’s nuclear program.

Report by Sharon Squassoni — March 22, 2013