Just four days later, Lavrentii Beria issued a protocol ordering Soviet scientists to submit a report on the progress of the "Layer Cake," physicist Andrei Sakharov's H-bomb design. On December ...

and polarizing design, but it proved successful to Ukrainian forces which scavenged parts from the hydrogen car to create the ...

the Soviet press announced that the USSR had tested a hydrogen bomb. Eight days prior in Kazakhstan, the explosive device “Joe-4” put to the Soviet developed “layer cake” design to the test.

In a sense, they might’ve just deployed the smallest hydrogen bomb ever built. The bomb was constructed as part of a July ...