Abstract
The nuclear bomb is much more than a common weapon, it can determine the balance of the powers, and it is a crucial point for understanding the international strategic relations. The nuclear bomb represents the possibility for a country to be wiped off the map. Between 1950 and 1990, it became important to replace the atomic bomb in the Cold War context. Each superpower tried to help its allies to defend themselves: it was a real nuclear arms race. This subject is closely linked to intelligence insofar as the nuclear affairs are always shrouded in mystery.
