The supreme leader, Ayatollah Ali Khamenei, said that Iran will “move toward” a nuclear weapon if attacked by the U.S. or ...

America’s new B61-12 nuclear warhead highlights how dangerous of a moment the world finds itself in—and real the potential is ...

Iranian lawmaker Amir Naderi said, "If we were also armed with an atomic bomb, Trump would not dare threaten bombing." ...

Iran will develop nuclear weapons if Donald Trump launches military strikes against the country, a senior official has said.

A group of influential conservatives and lawmakers is warning the Trump administration that the U.S. does not have the ...

Trump warned Iran after sending a letter to revive nuclear talks. With "maximum pressure" back on the table, tensions between ...

Iran has sparked nuclear weapon fears after issuing Donald Trump a stark warning. The Middle Eastern country will develop ...

An advisor to Iran's supreme leader said on Monday that Iran will be forced to build a nuclear weapon if the U.S. makes a ...

Many scientists say “subcritical” experiments and computer simulations make nuclear weapons testing unnecessary.

France's foreign minister warned Wednesday that a military confrontation with Iran would be "almost inevitable" if talks over ...

A US House Committee hearing highlighted bipartisan concern over Iran's nuclear program, but divisions remain on the best ...