Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

(Bloomberg) -- US President Donald Trump has said he’s instructed the Defense Department to start testing nuclear weapons “on an equal basis” with rivals such as Russia and China. It’s unclear whether ...

New tests of the U.S. nuclear weapons system ordered up by President Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was the first clarity from the Trump ...

President Trump has announced plans to begin testing nuclear weapons, raising fears of a new arms race as Russia and China respond with warnings. President Trump has announced plans to begin testing ...

WEST PALM BEACH, Fla. (AP) — New tests of the U.S. nuclear weapons system ordered up by President Donald Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was ...