Nuclear Disarmament - Is it possible for all countries?

I don't see any country agreeing to give up their nuclear weapons. If you take a look at history, one thing that has remained constant, are wars. Those that were not able to defend themselves have basically become colonies of stronger world powers, just think of Africa and what the Europeans did to them. Take a look at what China is doing to their neighbours. The only way that wars could be ended, and nuclear weapons are abandoned, is if somehow something was done to make everyone on this planet come together.