Originally Posted by
-:Undertaker:-
To destroy the entire Earth, the only countries with enough nuclear arsenal capable of doing that are the United States and the Russian Federation who have dramatically reduced nuclear stockpiles since the end of the Cold War. A nation cannot just make a nuclear bomb, it needs the knowledge from another state and also needs the technical advances to make enrich the uranium, and in North Koreas' case; to make the missile the bomb would be deployed on.
A nuclear bomb will never go off itself, infact there is one at the bottom of the sea right now that the United States still hasn't recovered, it could stay down there for millions of years and it will never be set off. There are so many safety precautions its unimaginable.
On the case of the Trident system in the United Kingdom, of course we should keep it, it would be foolish to scrap our independant nuclear deterrant. In the future we face an energy crisis which will put the United Kingdom and Eastern Europe in the hands of the Russian Federation, now i'm not saying we would use them in that case but i'm sure Russia would think twice about using energy tactics against us if we are a nuclear armed state, if tensions do rise that high at one point.
You cannot uninvent something, and while nuclear bombs are around - the world is a much more safe place.