Accidents happen. The least accident-prone nuclear weapons are the ones that are not in motion - but not always: see Eric Schlosser's account of the Damascus incident in Command and Control.

Iran's nuclear chief has raised concerns for the fate of the country's only running atomic power plant amid talks with the West about a final deal to curb Tehran's controversial nuclear program, a newspaper reported on Monday.

The United States and three European allies want a global body controlling nuclear exports to consider whether to establish closer ties with non-members including Israel, despite its assumed atomic arsenal, a confidential document showed.

Remarks by Rose Gottemoeller, Under Secretary for Arms Control and International Security, at Hiroshima University in Hiroshima, Japan.  

The US nuclear weapons complex is in disarray, disrepair, and perhaps dissolution. In 2000, Washington created the National Nuclear Security Administration (NNSA) to better manage the facilities that make up the complex, which include the national laboratories at Los Alamos, New Mexico, and Livermore, California, as well as sites that maintain, dismantle, and produce components for nuclear weapons. But as a Congressional commission led by former Under Secretary of the Army Norman Augustine and retired Adm. Richard Mies recently concluded, the NNSA has failed in its mission.

The United States is giving China a "mission impossible" by insisting it exert pressure on neighboring North Korea to halt its nuclear program or face US consequences, Beijing's ambassador said Thursday.

The United States said on Tuesday Iran has the ability to produce fissile material for a nuclear bomb in two months, if it so decided, as Tehran and six world powers swung into a new round of talks in Vienna on resolving their atomic dispute.

The Iran nuclear talks, due to resume on April 7th, have already been jolted by the explicit Russian warning that it may change its approach toward the Iran nuclear issue in light of the Western sanctions against Russia over Crimea. While it remains to be seen if Moscow will 'compartmentalize' the Ukraine issue from the Middle East issues or link them together as threatened, rising tensions between Iran and (nuclear-armed) Pakistan constitute another dark cloud hovering over the talks. Without doubt, the Iranian-Pakistani relationship is a complicating factor that cannot be sidestepped when considering the core issues related to a comprehensive, final-status nuclear negotiation between Iran and the world powers. Rather, it raises the issue of regional security, which may need to be integrated in the on-going talks, as it was in earlier negotiations.