A nuclear nonproliferation initiative set by President Obama in 2009 is far behind its goal of securing vulnerable nuclear material by 2013.

The State Department is refusing to block United Nations nuclear technology aid to countries that are on the U.S. list of state sponsors of

The United States provides $20 million a year to help finance the International Atomic Energy Agency, which promotes peaceful use of nuclear

Inadequate efforts to prevent proliferation of WMD presents serious security risk

Many countries are not adequately protecting their fissile materials

Experts say a senate bill may encourage production of highly-enriched uranium

Future arms agreements threaten profitable line of work for defense contracting giants

An expert scientific panel says that signficant, clandestine explosions are just about impossible.

Washington makes headway in choking off the supply of highly-enriched uranium for medical isotopes.

Squabbling in Washington intensifies as a former nuclear force commander urges 80% reduction in the arsenal.