Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald ...

The U.S. government revealed new intelligence on Tuesday suggesting China may have conducted an ...

At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.

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

State Department alleges China conducted nuclear test in 2020, reigniting debate over U.S. testing moratorium and ...

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

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.

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

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

(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 ...

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 ...

OP-ED. By allowing the New START treaty to expire, Donald Trump and Vladimir Putin deliver the final blow to global ...