The significance of the arms race
1. The Americans dropped its first atomic bombs on Hiroshima on 6 August 1945 and Nagasaki on 9 August 1945
2. The Soviets developed their own bomb in 1949
3. The Americans then developed a hydrogen bomb in 1952
4. In 1953 the Soviets developed a hydrogen bomb
5. In 1957, the USA developed an ICBM which could fire a missile more than 4,500 km
6. Also in 1957, the USSR launched Sputnik, the world's first satellite. This caused panic in the USA, and triggered the start of a space race
7. This cost both sides huge amounts of money, which was particularly difficult for the USSR, and increased tension, as each side had ICBMs capable of hitting the other
8. Now both sides had enough weapons to destroy each other ('Mutually Assured Destruction' – MAD), weapons became less about winning wars and more about deterrence
9. Concerns about the cost and escalating tension led to Khrushchev's attempts to establish 'peaceful co-existence', eg the Geneva