A nuclear weapon is a type of weapon which inflicts massive damage. Its being produced legally or by secret by countries.
The nuclear arms havent got a long history.Its first used by the USA to bomb Japan.Then it had been produced but not use in the Cold War.The Union of Soviet Socialist Republics and the USA were at an arms race. But after the collapse of the Soviet Union the arming race had been stopped for a short time. After the september 11th attacks USA began to make nuclear weapons to use if any terrorist attack happens.The North Korea also has a big nuclear weapon programme to use against South Korea. In middle east Iran also bought nuclear weapons from North Korea.
As a result of this,there are indeed destructive weapons still at world.But the nations must keep their sanity and preserve the nature. They should not make weapons.