Nuclear Weapons

Iran has begun construction at its Natanz nuclear facility, satellite images released Wednesday show.

Putin’s move comes amid uncertainty surrounding the New START arms control treaty that expires in February.

U.N. Secretary-General Antonio Guterres called the nuclear weapons ban treaty “a very welcome initiative."

Russia said it’s ready to accept a U.S. proposal to freeze the number of warheads and extend the New START treaty for a year...

The U.S. and Russia rejected each other's proposals for salvaging the last legal constraint on strategic nuclear forces.

A 71-year-old Roman Catholic priest has been sentenced to federal prison for breaking into a Navy submarine base in Georgia.

The United States said it had reached an "agreement in principle" with Russia on extending New START.

Biden has not spelled out how he would pursue a nuclear-free world, but he has dropped clues.

Adm. Richard said he could not discuss what may be classified and referred questions to the White House.

The harsh warning is directed at the United States, which has worked to develop long-range non-nuclear weapons.