Russian officials say they are waiting for an explanation from President Donald Trump about nuclear testing. He hasn't given ...

Washington — President Trump directed the Pentagon on Wednesday to resume testing of nuclear weapons "on an equal basis" with other countries' tests, possibly ending a decades-long U.S. pause that ...

Samples of "trinitite" created during the world’s first nuclear bomb test in 1945 contain unique crystals never seen before.

Trump ordered the Pentagon to restart nuclear testing for the first time since 1992, citing rival nations’ actions. Trump’s claim that the U.S. has the largest arsenal contradicts data showing Russia ...

Russia says "nuclear munitions" sent to Belarus for joint drills in the country that Moscow used as a launchpad for its 2022 ...

The head of the organization overseeing a treaty banning nuclear testing is warning that if the United States, Russia or any other nation goes ahead with a test, other nations will follow.

The discovery from the Trinity nuclear test site shows how extreme conditions can result in materials never before seen in ...

The State Department’s allegation that China conducted a yield-producing nuclear test in 2020 is reigniting debate in Washington over whether the United States can continue its decades-long moratorium ...

A DF-17 road-mobile medium-range ballistic missile is seen during a military parade in Beijing's Tiananmen Square on September 3, 2025. China may want to develop new nuclear warheads for its ...

A senior U.S. official offered new details Tuesday night about an alleged nuclear bomb test conducted by China in June 2020. Assistant Secretary of State Christopher Yeaw spoke at a Hudson Institute ...