SEOUL, South Korea (AP) — Soon after the ground shook around its nuclear testing facility, North Korea trumpeted its first hydrogen bomb test — a powerful, self-proclaimed "H-bomb of justice" that ...

Chinese researchers have successfully tested a non-nuclear hydrogen-based bomb, producing a fireball that burned over two seconds – 15 times longer than a comparable TNT blast. Developed by the China ...

The test likely pushed Pyongyang's scientists and engineers closer to their goal of building a warhead small enough to place on a missile that can reach the U.S. mainland. But South Korea's spy agency ...

SEOUL, South Korea — North Korea says it has conducted a hydrogen bomb test. The surprise announcement that complicates already difficult efforts to curb the country's push for a working nuclear ...

SEOUL, South Korea (AP) — Soon after the ground shook around its nuclear testing facility, North Korea trumpeted its first hydrogen bomb test — a powerful, self-proclaimed “H-bomb of justice” that ...

North Korea released a statement early Wednesday asserting that they have successfully tested a hydrogen bomb, “a measure for self-defence the DPRK has taken to firmly protect the sovereignty of the ...