The New START treaty, which limits strategic nuclear weapons, is to expire this week.

By Mark Trevelyan Jan 30 (Reuters) - The last Russia-U.S. nuclear arms control treaty, known as New START, is due to expire ...

El Segundo, California-headquartered startup Radiant Nuclear is making big moves in its mission to bring its 1-MW microreactors to market. The company has just raised US$300 million to scale its ...

An advanced nuclear startup just achieved a milestone as it races to meet an ambitious Department of Energy goal. Founded just over two years ago in July 2023, El Segundo-based Valar Atomics announced ...

Dmitry Medvedev said Moscow had not received a U.S. response to Russia's proposal to extend the New START treaty.

On February 4, the New START Treaty, the last remaining nuclear arms control agreement between the United States and Russia, is set to expire. Signed in 2010, the agreement caps deployed strategic ...

Doomsday Clock is closest to midnight as it's ever been, signaling urgent threat to the planet, says the letter writer.

As China continues to expand its nuclear capabilities, and Russia and the U.S. walk away from arms control, the future is terrifying: a new nuclear arms race, with more players, and less ...

The New Strategic Arms Reduction Treaty (New START), which limits the number of nuclear warheads and delivery systems between ...

A key nuclear treaty, the START (Strategic Arms Reduction Treaty) expires on Feb 4th 2026.  This bilateral treaty between the ...