Russia's nuclear shield should be strengthened in coming years due to the "colossal threats" facing the world's biggest nuclear power, the head of Russia's state nuclear corporation said on Thursday.

For decades, the threat of nuclear conflict between the US and the Soviet Union hung over humanity. Now, only one nuclear arms pact between Moscow and Washington is still standing: New START, which experts say is on the ropes and set to expire in February in any case.

Russia is facing "colossal threats" that mean it must continuously improve its nuclear weapons "shield," the chief of the state atomic energy agency warned. Why It Matters Nuclear rhetoric and threats have increased over the almost three-and-a-half years since Putin put Russia's nuclear deterrence forces on high alert as Moscow's forces poured into Ukraine in early 2022.

Russia has named Marina Starovoitova as the first woman to captain a nuclear-powered icebreaker.

President Donald Trump issued a rare threat of nuclear escalation on Friday, saying he had ordered two nuclear submarines to be strategically positioned near Russia in response to what he said were aggressive remarks by Dmitry Medvedev,

The so-called "snapback" clause of U.N. Security Council resolution 2231 could once again place Iran under stringent sanctions for failing to comply with the nuclear enrichment levels dictated by the Joint Comprehensive Plan of Action, the 2015 nuclear deal President Donald Trump quit in 2018.

Charles Oppenheimer knows his family name comes with a heavy responsibility.

US President Donald Trump said Friday he was ordering two US Navy nuclear submarines to “appropriate regions,” in response to remarks by Dmitry Medvedev, Russia’s former president and current deputy chairman of its Security Council.