The reason I say that is because the powers that are in control have no desire to actually use them, they are a propaganda tool that helps serve the purpose of keeping the money flow going in the direction it has always flowed, out of the hands of the people and into the hands of the banker elites.
Everyone knows that using a nuke against anyone is a losing proposition for both the bomber and the bombee<I know that isn't proper..lol, and there is no money, power or quite honestly anything to gain from nuking anyone for anything. Remember, money is the entire driving force behind the worlds powers.
There has been more chances to use nukes in the last 60 years than I can count, and yet, noone has, because it is just a tool for manipulation.
Peace
Asmallvoice