Your tax dollars are being spent to build seven new nuclear weapons programs simultaneously. But there’s time for public ...

Transporting nuclear weapons is one of the most secretive and high-stakes operations in global security. From warheads to ...

On the heels of US attacks on three nuclear sites in Iran Saturday, here's a look at which nations currently possess nuclear weapons.

Why does the power to launch nuclear weapons rest with a single American?

On the heels of US attacks on three nuclear sites in Iran Saturday, here's a look at which nations currently possess nuclear weapons.

Ahead of U.S. strikes on Iran, one U.S. intel assessment concluded Iran could build a nuclear weapon in months but didn't assess it decided to do so, intel sources said.

In an address, the Israeli prime minister said Iran had taken steps to weaponize enriched uranium and was on the cusp of developing a nuclear weapon.

News Analysis The Bombing of Iran May Teach an Unwelcome Lesson on Nuclear Weapons Will America’s pre-emptive strike discourage other countries from pursuing a weapon — or just the opposite?

President Donald Trump said Iran was “weeks away” from having a nuclear bomb. Iran was close to having bomb-grade uranium, but experts predicted it could have taken anywhere from months to two ...

There are nine countries that currently either say they have nuclear weapons or are believed to possess them. The first to have nuclear arms were the five original nuclear weapons ...

Secretary of State Marco Rubio told Politico on Wednesday that Iran was " much further away from a nuclear weapon" following a US strike on Tehran's three main nuclear sites over the weekend.

The future of Iran’s nuclear program will depend in part on the extent of the damage from the U.S. attacks and Tehran’s negotiating position in the coming days.