UNITED NATIONS (AP) — With the U.S., Russia, China and other countries that have nuclear weapons refusing to ratify the treaty that bans atomic testing, the United Nations warned on Monday that any new test could trigger another arms race.

President Trump ruled out using nuclear weapons against Iran to end the war, calling it a "stupid question" to ask about the nuclear option.

Russia's nuclear doctrine allows for atomic weapons under extreme circumstances, but predicting whether Putin would actually authorize their use in or near Ukraine is impossible. This video instead explores several hypothetical scenarios after Russia has already crossed the nuclear threshold,

Vladimir Putin could still use a tactical nuclear weapon. People who now speak as though that possibility has evaporated are displaying a confidence the evidence does not support. Russia has the weapons. Russian doctrine continues to allow for nuclear ...

As the war sputters on, an internal report from the International Atomic Energy Agency said Iran’s refusal to grant access to its inspectors was an urgent concern.

President Donald Trump said preventing Tehran from obtaining a nuclear weapon remains the central objective of the U.S. campaign as senior Iranian officials pushed back against Washington's latest economic pressure.

Let's get the obvious difference out of the way first: A nuclear reactor generates electricity that can power the world around us. A nuclear weapon, well, we know plenty enough about the damage one of these devices can cause. However, this leads to an ...

Residents are concerned that the joint University of Michigan/Los Alamos facility will power a nuclear arms race.

Tucker Carlson raged against former ally Donald Trump over the possibility of using nuclear weapons against Iran, RadarOnline. com can reveal.

It all starts in the earth’s crust, home to uranium ore. Uranium is found all over the world, though mostly in trace quantities. Five countries—Australia, Canada, Kazakhstan, Namibia, and Russia—account for about two-thirds of the world’s known supply.