SEOUL, South Korea — 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 would ...

Richard Garwin, who has died aged 97, was an American nuclear scientist who designed the world’s first hydrogen bomb and went on to become a presidential adviser on arms control, while helping to lay ...

Richard L. Garwin, an architect of America’s hydrogen bomb, who shaped defense policies for postwar governments and laid the groundwork for insights into the structure of the universe as well as for ...