The DOD of course has a long history of jump-starting innovation. Historically, it has taken the megafunding and top-down control structures of the federal government to do the kind of investing required to create important technology for the military. Digital photography, GPS, the Internet itself—all were nourished by defense contracts before being opened up to the private sector, which then turned them into billion-dollar industries.

Now the flow has reversed. Defense has been caught in the throes of the same upheaval that has disrupted legacy industries, unseated politicians, and upended global dynamics.

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.

PDP Co-Director Dr. Ashton B. Carter explores the daunting list of national security challenges facing the next American president.

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

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

Former Clinton administration officials Ashton Carter and William Perry argue that the most effective way to curb the threat from Pyongyang is to destroy its missiles at their test sites

Should the United States allow a country openly hostile to it and armed with nuclear weapons to perfect an intercontinental ballistic missile capable of delivering nuclear weapons to U.S. soil? We believe not. If North Korea persists in its launch preparations, the United States should immediately make clear its intention to strike and destroy the North Korean Taepodong missile before it can be launched.

Dr. Ashton B. Carter testifies before the Senate Committee on Foreign Relations on the Implications for U.S. Nonproliferation Policy of the July 18, 2005 Joint Statement between President Bush and Prime Minister Manmohan Singh of India