None.The USSR or any other country to present date has not officially said that they have.
The Limited Test Ban Treaty, signed in 1963, prohibited nuclear tests in the atmosphere, in outer space, and underwater. This allowed for a reduction in tensions between the USA and the USSR by lessening the risk of radioactive fallout and environmental damage caused by nuclear tests.
None.
On August 5, 1963, representatives of the United States, Soviet Union and Great Britain signed the Limited Nuclear Test Ban Treaty, which prohibited the testing of nuclear weapons in outer space, underwater or in the atmosphere.
US: 1945. USSR: 1949
The red bomb refers to the USSR nuclear bomb and the treat to the free world by the USSR using nuclear war in its aggressive expansion
America and (USSR)Russia were the two superpowers of the cold war. America was the democracy side and they were trying to beat the USSR. America was more advanced in World War II and Russia was actually very technology unadvanced. After world war II, the USSR caught up and started making nuclear weapons. The USA was responding to this and they affected the cold war by responding to the USSR's " Threats ". The USA made nuclear weapons too, competed in the space race, and much more.Hope I helped
The USSR's Obninsk Nuclear Plant which opened in 1954.
first USSR nuclear test
The first craft to get fully into space was the USSR's Sputnik 1. It was the first spacecraft to orbit the Earth and sparked off a space race and contributed towards the nuclear arms race of the Cold War.
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USSR
On December 8, 1966, the USSR and the United States signed a treaty saying no nuclear weapons in space.