The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing ...

The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for ...

The US accused China of secret nuclear tests, banned under international agreement, that were building toward tests of larger ...

Satellite images show major construction at secret nuclear weapons facilities in southwest China. The images reveal new buildings, underground bunkers, and industrial infrastructure linked to ...

A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

President Donald Trump is confused. Just moments before he was to meet with China’s President Xi Jinping, he posted a baffling message on his Truth Social site, claiming the U.S. would “immediately” ...

By Olivia Le Poidevin and Mark Trevelyan GENEVA, Feb 6 (Reuters) - The United States accused Beijing on Friday of conducting ...

The U.S.' top arms control official confirmed a Chinese nuclear test first suspected in 2020.

Confusion and ambiguity are dangerous in nuclear brinksmanship. President Donald Trump spread both on Wednesday when he ...

President Trump’s approach to this new, unbound era is alarming in both its words and its mechanics. Rather than preserving the stability that has held for half a century, the administration is ...

(CNN) — Top energy and nuclear officials in the Trump administration are planning to meet with the White House and National Security Council in the coming days to dissuade President Donald Trump from ...