Nuclear Weapons

U.S. officials said they had seen no sign that Putin's order has been followed by significant changes in the Russian nuclear...

Oppenheimer was the lead scientist for the secret Manhattan Project that developed nuclear weapons during WWII.

These weapons of war are "overrated" in the sense that they occupy a larger space in the defense-security conversation than...

The U.S. special envoy for Iran, Robert Malley, told reporters there is a “deep and growing” concern about Iran’s continued...

The consensus comes amid growing concerns that Tehran is not serious about returning to the negotiations.

Abdul Qadeer Khan was mired in controversy that began even before he returned to Pakistan from the Netherlands in the 1970s.

The U.S. Energy Department is pushing for a test at Los Alamos National Laboratory that’s more limited in detecting...

Advocates have been trying for years to bring awareness to the lingering effects of nuclear fallout surrounding the Trinity...

North Korea’s recent sword-rattling after months of relative quiet makes clear that leader Kim Jong Un is working on...

The Kremlin has made military modernization a top priority as relations with the West have plunged to post-Cold War lows.