As Director and Co-Director of the Belfer Center, Ash Carter and Eric Rosenbach have inherited from Graham Allison the world’s No. 1-ranked university think tank. They intend to build on that success by sustaining the Center’s core mission while widening its aperture; enhancing its unique ability to leverage science and technology to meet global challenges; and priming the next generation of leaders in both scholarship and policymaking.

From sharply rising tensions with a nuclear North Korea and decertification of the Iran nuclear deal to China’s growing global assertiveness and the State Department pullback from projecting American values, such as democracy and human rights, around the world, the United States faces urgent national security challenges.

In a panel discussion Monday evening at Harvard Kennedy School (HKS) moderated by MSNBC host Rachel Maddow, former members of President Obama’s cabinet described what they see as a fraying of alliances, a loss of credibility with allies and enemies, a stepping back as a leader on human rights and democracy, and a relinquishment of diplomacy as a critical component of national security.

A paper by the National Security Advisory Group

Ashton B. Carter, William J. Perry, and John M. Shalikashvili address the danger of loose nukes in North Korea in this Wall Street Journal op-ed.

Dr. Ashton B. Carter in Foreign Affairs.

Article examining NATO's past, present, and future for the Eisenhower Institute

Chapter in Janne E. Nolan's book "Global Engagement: Cooperation and Security in the 21st Century"

Chapter 9 in New Nuclear Nations: Consequences for U.S. Policy

"CSIA's research on cooperative denuclearization began during the August 1991 putsch against Mikhail Gorbachev. To those of us familiar with nuclear weapons, their construction, and command and control, and with the looming revolution about to sweep the then–Soviet Union, it was plain that a new and unprecedented danger to international security was emerging. An appropriate policy response to this new form of nuclear threat could not be fashioned from traditional Cold War tools of deterrence, arms control, and military preparedness alone. Safety could only be sought through new policies emphasizing cooperative engagement with the new states, new leaders, and military and industrial heirs of the former Soviet Union...."

Op-ed by Dr. Ashton B. Carter and Dr. Graham T. Allison in The Washington Post