Nuclear | featured news

Big power envoys were to meet on Wednesday to pursue the quest for fresh U.N. sanctions to try to halt Iran's nuclear program, but diplomats forecast weeks of haggling over a text the Security Council can pass.

At nuclear summit, Obama calls on governments to embrace action to prevent nuclear materials from falling into hands of terror groups.

As the White House pushes for cuts in the U.S. nuclear arsenal, the Pentagon is developing a weapon to help fill the gap: missiles armed with conventional warheads that could strike anywhere in the world in less than an hour.

Sweeping pact pledges to cut stockpile of deployed, strategic nuclear weapons and commits the old Cold War rivals to new verification procedures.

Iran's hard-line president has ridiculed President Obama's new strategy aimed at reducing the likelihood of nuclear conflict.

The Obama administration unveiled a new policy Tuesday restricting U.S. use of nuclear weapons but sent a stern message to nuclear-defiant Iran and North Korea that they remain potential targets.

The U.S. and Russian presidents are to sign a pact on Thursday committing the former Cold War foes to unprecedented nuclear arms reductions, cementing a hard-won deal that should put strained ties on firmer footing.

China has agreed to negotiate possible sanctions against Iran over Tehran's failure to comply with international regulations involving its nuclear energy program, the U.S.

A phone call Friday morning with the Russian president confirmed the last outstanding details in the nuclear pact.

Mideast rivals Israel and Syria announced on Tuesday ambitions to develop nuclear energy, with Israel facing the prospect that ...