The Soviet Union detonated its first atomic bomb ... On August 20, 1953, the Soviet press announced that the USSR had tested a hydrogen bomb. Eight days prior in Kazakhstan, the explosive device ...

In the early 1960s, the Institute grappled with going beyond “Duck and Cover.” The bombing of Hiroshima and Nagasaki in ...

While the United States and the Soviet Union rushed ... fusion of hydrogen isotopes. A modified Tu-95 bomber codenamed “Bear” dropped it from the air. On the day the iconic bomb was dropped ...

Sakharov rejected the existing H-bomb design, coming up with a new concept ... A copy of the article was smuggled out of the Soviet Union and published in the New York Times.

Oppenheimer's aversion to further investment in the hydrogen bomb - a much more powerful ... considering the US arms race against the Soviet Union at the time. But it was a pragmatic, military ...

On a cold December morning in 1975, Soviet dissident Andrei Sakharov met a Norwegian diplomat on a Moscow street to hand over ...