An American nuclear-powered submarine leaked radiation for more than two years and may have affected three Japanese ports where it stopped more extensively than initially thought, Japanese officials said Thursday, releasing a U.S....

Major world powers agreed Wednesday to pursue new sanctions against Iran, even though the watered-down penalties already levied by the U.N. have only made Iran rush faster to perfect nuclear...

The Bush administration risks the collapse of a U.S.-Indian civil nuclear deal if it fails to push an international nuclear group to accept conditions that would punish India for testing atomic weapons, a Democratic lawmaker...

France joined the United States on Wednesday in rejecting Iran’s response to an incentives package aimed at defusing a dispute over its nuclear program as insufficient as negotiators from six major world powers plotted their next...

Six nations agreed Wednesday to pursue new U.N. sanctions against Iran after it failed to accept incentives offered in hopes of defusing the dispute over its nuclear program, the State Department...

A U.S. official tells The Associated Press that the five permanent members of the U.N. Security Council and Germany have agreed to begin considering new sanctions on Iran after it failed to respond positively to an incentives package aimed at...

The International Atomic Energy Agency says one of its top officials will travel to Iran on Thursday.

Kuwait’s foreign minister says Iran’s renewed threats to close the strategic Strait of Hormuz in the Persian Gulf amount to a “punishment” of its Arab...

Even if no new reactors are built, getting rid of the country’s nuclear waste will cost $96.2 billion and require a major expansion of the planned Nevada waste dump beyond limits imposed by Congress, the Energy Department said...

Iran’s response to an incentives package aimed at defusing a dispute over its nuclear program is unacceptable, U.S. officials said Tuesday, making the prospects of new sanctions against the country more...