If by 'no nukes' you mean that the countries listed do not have them then I'm afraid you're mistaken.
If you mean there shouldn't be any nukes, I agree with you - but letting Russia use them to blackmail the world means that even more countries will do whatever they can to acquire them, so to be able to blackmail neighbors, the rest to be able to 'answer' that blackmail with MAD. If you look at the last 50 years, MAD has come close on a couple of times (that we know of) to actual mutual destruction. and that was between two relatively sophisticated entities. Think about what happens as that nuclear standoff spreads to other nations. We have to take the situation as it is and move forward even though we'd likely be better off if they'd not been invented.