Amidst the weeping and gnashing of teeth from the Prime Minister’s office after the interim agreement on Iran reached in Geneva, it is appropriate to pause to ask how President Obama’s interim agreement actually measures up on Israeli Prime Minister Netanyahu’s chosen yardstick.

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.

"I summarized my own takeaway from the Iran simulation in a poor-man's version of Yogi Berra: if the river is pushing your raft to where you don't want to go, if you just hang on, you'll get there. My second: if you don't want to go where the river is pushing your raft, you better get off."

"The challenge for President Obama, Prime Minister Brown, members of the UN Security Council and the international community is to convince Kim Jong-il that he faces disastrous consequences."

Mr. Obama took a giant step beyond the Bush administration's "Afghanistan policy" when he named the issue "AfPak" -- Afghanistan, Pakistan and their shared, Pashtun-populated border. But this is inverted. We suggest renaming the policy "PakAf," to emphasize that, from the perspective of U.S. interests and regional stability, the heart of the problem lies in Pakistan.

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

Bush Administration's North Korea policy is a failure.

Many Americans consider the idea of a nuclear bomb exploding in an American city to be Hollywood science fiction, but FBI warnings that terrorists may be planning an attack on Chicago are hitting close to home and are eerily familiar

Sixty years ago, the Americans ended World War II by dropping Little Boy and Fat Man from B-29 bombers onto Hiroshima and Nagasaki. This was the explosive climax to the military's most expensive weapons program — the Manhattan Project to design and build a nuclear bomb.

On August 6, 1945, the United States carried out the first attack with nuclear weapons, against the Japanese city of Hiroshima. The weapon would fundamentally alter the face of conflict, and shape strategic thinking for subsequent generations. If strategists couldn't always agree on what force posture the United States should adopt, there was consistently broad agreement that the spread of nuclear weapons posed a fundamental threat to United States national security.