The Belfer Center's Graham Allison, Nicholas Burns, Ashraf Hegazy, Joseph S. Nye, and Stephen Walt consider the U.S.'s shifting foreign policy in the Middle East.

The Belfer Center is honored to have a number of our scholars and alumni prominently featured in the film Countdown to Zero. It is a testament to our long-standing commitment to providing leadership in advancing policy-relevant knowledge about the threat of nuclear terrorism and proliferation. Translating words into deeds, however, will require private citizens to take action. For her work in pushing nations around the world to sign a treaty banning land mines, Jody Williams won the Nobel Peace Prize in 1997....Someone asked one of my colleagues here at the Center, what would a nuclear Jody Williams do? Colleagues here have developed a list.

The only thing that can keep nuclear bombs out of the hands of terrorists is a brand-new science of nuclear forensics.

Belfer Center Director Graham Allison testified before the House Armed Services Committee about the findings of "World At Risk," the report produced by the Commission on the Prevention of Weapons of Mass Destruction Proliferation and Terrorism.

Graham Allison writes in a memo to a fictional President-elect McBama on the suject of nuclear terrorism, "You pledged that you would make preventing this catastrophe an organizing principle of your administration. This memo provides a brief outline of strategy and organization to fulfill that promise."

The assassination of former Pakistani prime minister Benazir Bhutto reminds us starkly of an unanswered question most of us would prefer to forget: how secure are Pakistan's nuclear weapons? Could Al Qaeda or another terrorist group acquire a warhead or enough radioactive material to create a dirty bomb?

According to a recent Gallup poll, most Americans now view Iran as our country's greatest national enemy. Indeed, a Washington Post-ABC News survey reports that 42 percent of Americans support a military strike to prevent Iran from developing nuclear technology.

What is the gravest threat to the lives and liberties of Europeans and Americans today? Europeans and Americans differ profoundly in their answers to this fundamental question. Recent conversations with 100 security experts at NATO in Brussels and in Berlin, London and Athens underscored for me just how profoundly.

The box-office hit film "The Peacemaker" is a pulse-pounding spellbinder in which terrorists hijack nuclear weapons from Russia, smuggle one into the United States, and target New York City. Unfortunately, that make-believe scenario is a real-life worry.