President Barack Obama announced Monday that he has nominated Dr. Ashton B. Carter to serve as Under Secretary of Defense for Acquisition, Technology and Logistics.

Dr. Ashton B. Carter and Ambassador Robert G. Joseph discuss recommendations stemming from recommendations in final report of the review they co-chaired of the Defense Threat Reduction Agency (DTRA) and other DOD efforts to counter weapons of mass destruction.

PDP Co-Director Ashton B. Carter testifies before the Senate Committee on Homeland Security and Governmental Affairs.

PDP Co-Director Ashton B. Carter and the Honorable Robert G. Joseph co-chaired a Review Panel on Future Directions for DTRA Missions and Capabilities to Combat Weapons of Mass Destruction (WMD).

This report of the International Security Advisory Board (ISAB) offers nineteen recommendations for discouraging a cascade of nuclear weapons states.

This National Security Advisory Group report provides a new comprehensive strategy for reducing nuclear threats and preventing nuclear terrorism.

Failure to develop a comprehensive contingency plan, such as the one proposed here, and inform the American public, where appropriate, about its particulars will only serve to amplify the devastating impact of any nuclear attack on a U.S. city

Ashton B. Carter, William J. Perry, and Michael May call on the United States government to formulate contingency plans that may save thousands of lives and billions of dollars, prevent panic and promote recovery should a nuclear weapon go off in an American city.

The Preventive Defense Project convened a workshop of leading federal government civilian and military officials, scientists, policy experts, and journalists in Washington, D.C. to address "The Day After: Action in the 24 Hours Following a Nuclear Blast in an American City."