The 2012 Nuclear Security Summit in Seoul could have been a watershed moment for nuclear security, but it was largely a review of past successes.
NATO should withdraw the remaining US tactical nuclear weapons deployed in Europe during the Cold War. To advance the discussion of total withdrawal, the upcoming NATO Defense and Deterrence Posture Review should officially announce the numbers and locations of all of these weapons.
Predictions of an imminent Iranian nuclear bomb are extreme, worst-case scenarios that impede the sober pursuit of a diplomatic solution.
The United States can help move the Middle East toward a WMD-free zone, regain leadership in the region, make diplomacy a strategic tool, and stem nuclear proliferation. If only it would.
Uncertainty about a North Korea under Kim Jong-un is endemic. The best way to reduce it is not to engage in idle speculation but to try diplomatic give-and-take.
To make further progress in reducing the number of nuclear weapons, some missions for nuclear weapons need to be eliminated. The most dangerous nuclear mission -- a counterforce attack on the other side's nuclear arsenal, before it is used -- should be the first to go.
If North Korea is serious about talks, can the parties negotiate a comprehensive deal? Yes, they can, should, and must.
The Conference on Disarmament has let Pakistan bottle up a treaty to ban fissile material production for years. The US should help start negotiations -- somewhere else.
GPS signals can detect atmospheric changes that accompany clandestine nuclear tests. They may also give the US a reason to ratify the Comprehensive Test Ban Treaty.
Why the Hiroshima and Nagasaki bombings and the Fukushima disaster should cause the Japanese government to change policy and support a nuclear weapons convention.
To advance his goals, Obama should issue a directive that explains a new nuclear deterrence plan focused on destroying essential enemy infrastructure.
In times of conflict, both India and Pakistan rely on the United States to provide crisis-management support, but the two countries must find a more sustainable approach.
US national security agencies recognize the seriousness of the climate change threat. Why aren't America's other policymakers responding?
Before leaving office, Defense Secretary Gates criticized European NATO members for not appropriately sharing costs related to alliance defense obligations. His remarks raise an important question: Is it time to reconsider the deployment of nearly 200 US tactical nuclear weapons in Europe?
With bin Laden's death, the United States has the opportunity to shift strategy, take focus off terrorist groups, and re-engage on the real existential threats to the nation.
Debates over the health effects of various radiation doses are obscuring the real issue: No dose is safe or harmless.
The success of the CTBT's global monitoring system in response to the tragedy in Japan has demonstrated its effectiveness in responding to natural disasters, further evidencing its value to US and global security.
In the wake of Fukushima, it may be time to broaden the scope of the Seoul 2012 Nuclear Security Summit to include safety issues as well as security.