US President Donald Trump said on Thursday that he had prevented several nuclear wars around the world, including a nuclear war between Ukraine and Russia.

Since the collapse of the old Soviet Union, Russia has cut a substantially diminished figure on the international stage.

Theories about the consequences of a global nuclear war—often described in terms like nuclear holocaust—span multiple disciplines, from climate science to geopolitics. The following is structured rundown of the major theories and models that explore ...

During the Cold War, the U.S. considered stationing nuclear missiles under the ice sheet in Greenland -- and never told Greenlanders or Denmark about the secret project.

The last major nuclear arms control treaty between the United States and Russia has expired, removing limits on the world’s two largest nuclear arsenals. With no inspections, caps, or verification mechanisms in place,

“At the end of the Cold War, global powers reached the consensus that the world would be better off with fewer nuclear weapons. That era is now over.” That is the chilling opening line of Kathryn Bigelow’s new film, “A House of Dynamite.”

Technological innovation and strategic competition appear to be increasing the risk of nuclear war. Mending the fraying international nuclear nonproliferation and arms control regimes should be a top global priority. A vehicle carrying a Russian Topol-M ...