RDS-3

RDS-3, also known as "RDS-3A," was a nuclear bomb developed by the Soviet Union during the Cold War. It was part of the RDS series of nuclear weapons and was first tested in the early 1950s. The RDS-3 was essentially an early thermonuclear device, and it represented a significant step in the development of Soviet nuclear capabilities. The bomb was notable for its relatively compact design and was used primarily for testing purposes.