Metatron,
That would have been a good idea for the United States when it was the only country with atomic weapons.
The US could have dropped a bomb on any country that looked like they were trying to make a bomb.
You want nuclear weapons? Here take this one for now.
The US was in a position of being able to impose its will on any country that tried to get into the weapons business.
If a country tested a weapon they would have a bomb dropped on their facilities to build weapons.
The genie could have been put back in the bottle.
However without nuclear weapons the cold war would have become hotter. India and Pakistan would have killed millions in a coventional war.
At this point the US should give every country a few missiles and nuclear weapons and the fighting would cease.