Speculation is mounting about whether Iran's supreme leader has approved nuclear weapons development after June's conflict ...

President Donald Trump's comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to the bomb, but come as Washington's ...

Though the country’s nuclear arsenal has undergone no explosive testing for decades, federal experts say it can reliably obliterate targets halfway around the globe. By William J. Broad President ...

Iran's foreign minister warned of "everlasting consequences" and condemned the U.S. strikes as "outrageous," while some U.S. lawmakers criticized the action as illegal and grounds for impeachment. The ...