At the conclusion of two days of trilateral meetings between the U.S., Ukraine, and Russia, Middle East envoy Steve Witkoff called the negotiations “constructive” but had little progress to report.

The world is sliding into a new era of strategic risk in which weapons once confined to science fiction are edging toward ...

The small rocket and capsule have been flying since April 2015 and have combined to make 38 launches, all but one of which ...

There is a sociological concept, the Overton window: An idea initially perceived by everyone as unthinkable, radical, and ...

Humanity’s first successful lunar lander is missing. Sixty years ago the Soviet Luna 9 became the first human-made object to ...

Russian Luch “inspector” satellites are suspected of shadowing European GEO spacecraft, raising fears of interception, ...

Scientists have spent decades searching for the final resting place of Luna 9, the first spacecraft to soft-land on the moon.

For the first time in more than half a century, there are no limits on the world’s two largest atomic arsenals. The sole ...

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

The last remaining nuclear arms pact between Russia and the United States is set to expire this week, removing any caps on ...

A Russian official said Moscow is ready to respond with military measures if the United States deploys its missile defense ...

After early space victories, the Soviet Union quietly planned an ambitious, self-sufficient moon base meant to secure lunar dominance before the United States. Built around nuclear power, buried ...