A lot of world leaders want nuclear weapons. A lot have them. The reality should be that nobody should have them. Period. These are not weapons to win wars and stop terror; these are weapons to destroy nations and cause terror.
Does anyone think that the world would be a better place without nuclear weapons? Why?
As a threat and deterrent, nuclear weapons have done a remarkable job for the last 50 years. Communist expansion was slowed by the threat of nuclear war for the duration of the Cold War. WWII was ended in the Pacific simply because of the threat of further nuclear action against Japan.
Sure, it would be great if everyone held hands and sang joyous songs together. But unless you have a plan that makes that a reality, a dominant military force, backed by the threat of annihilation from afar sounds like a great compromise.
And before someone starts spouting about how we should settle disputes with diplomacy and negotiation, let me ask one question: is diplomacy and negotiation effective in any situation where there is no threat of military action?
Why do you think that other countries want nuclear weapons? Is it to use them? Of course not. It is so they can negotiate with their neighbors from a position of strength.
I've got more, but I'll open the floor.