VIENNA (AP) — In the wake of U.S. President Donald Trump’s suggestion earlier this year that the U.S. would resume nuclear ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. “We’ve halted many years ago, but with others doing testing I think it’s ...

In 1955, the US Navy detonated a nuclear warhead deep beneath the Pacific Ocean during Operation Wigwam. The test focused on ...

In a particularly heated moment from his first term, Trump taunted North Korea’s Kim Jong Un — whose 2017 underground test is the last known example of explosive nuclear testing — for the relative ...

A new program at the Department of Energy is pushing the development of nearly a dozen new reactor designs at breakneck speed ...

A subsurface atomic test near Yucca Flats, Nev., in March 1955. (U.S. Atomic Energy Commission via AP) In what would be a major shift in a decades-old American policy against global nuclear ...

President Donald Trump has directed the Pentagon to resume testing nuclear weapons after a 33-year pause, announcing the move on social media just ahead of meeting Chinese President Xi Jinping in ...

SEOUL, South Korea (AP) — North Korea said it conducted a “higher level” nuclear test explosion on Friday that will allow it to finally build an array of stronger, smaller and lighter nuclear weapons.

India has successfully test-fired a nuclear-capable ballistic missile, demonstrating its nuclear prowess in the wake of a recent conflict with nuclear rival Pakistan. Defense Minister Rajnath Singh ...

As Iran’s nuclear program advances, the critical question of whether Tehran would need to conduct nuclear tests to ensure its weapons are effective looms over the consciousness of the international ...