US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to completely transform its nuclear arsenal into the world’s most technologically advanced,

The head of the U.N. nuclear watchdog agency says Iran's enriched uranium "is still there," as he stresses the urgency of diplomacy to avert a U.S.-Iran war.

The Pentagon and the Energy Department have airlifted a small nuclear reactor from California to Utah, demonstrating what they say is the potential for the U.S. to quickly deploy nuclear power for military and civilian use.

As President Donald Trump escalates military pressure on Iran, with signs mounting that the U.S. leader will once again make good on his threat of action, North Korean Supreme Leader Kim Jong Un watches on under a nuclear shield.

The Pentagon and the Energy Department for the first time airlifted a small nuclear reactor from California to Utah, demonstrating what they say is the U.S. potential to quickly deploy nuclear power for military and civilian use.

Iran and the United States are waging gunboat diplomacy as talks over Tehran’s nuclear program hang in the balance.

The Museum of Nuclear Science & History has appointed six new board members. Their diverse expertise positions the

The president was considering a range of military options but has said he still prefers diplomacy.