The last major nuclear arms control treaty between Russia and the United States expires on Thursday, ushering in an era without constraints set by the world’s largest nuclear powers

Top U.S. nuclear official accuses China of conducting a secret nuclear test in 2020 and confirms plans to restart U.S. nuclear testing, citing a need to match covert detonations by Beijing and Moscow.

If nothing replaces the New START nuclear arms treaty, security analysts see a more dangerous environment with a higher risk of miscalculation.

President Donald Trump called for U.S. nuclear experts to create a new modernized treaty to replace the New START nuclear arms agreement with Russia via Truth Social.

Despite Iran’s three main nuclear facilities remaining inoperative, images show visible work underway. Iran seems to have repaired some ballistic missile facilities damaged in strikes last year,

Repairs at key missile sites began soon after they were hit by Israeli and U.S. strikes last year, but work at Iran’s nuclear facilities has been slower.

The Kremlin says it regrets the expiration of the last remaining nuclear arms pact between Russia and the United States, while President Donald Trump declared he was against keeping its limits and wants a better deal.

Trump said as the New START Treaty lapsed on Thursday that nuclear experts should work on an "improved and modernized" treaty.

Russian and U.S. negotiators discussed the expiration of the last remaining nuclear arms pact between the two countries and agreed on the need to quickly launch new arms control talks, the Kremlin

LONDON/WASHINGTON, Feb 6 (Reuters) - The Trump administration's plan to unleash a wave of small futuristic nuclear reactors to power the AI era is falling back on an age-old strategy to dispose of the highly toxic waste: bury it at the bottom of a very deep hole.