well, right now you have countries that are totally developing nuclear weapons and others that signed treaties that forbid them to do so...I still don't get why anyone would sign a treaty that would authorize your opponent to use a weapon and forbid it to you. That seems insane.
Interestingly, that second set of countries were either losers una big war or far less powerful than the first...perhaps this tells us something about the federation and the Romulan empire (or perhaps not)?
and the federation assassinated a prominent Romulan to get them involved in a war...Plus the Romulans are sneaky bastards who tried to blow up the Enterprise D AFTER its crew had saved them from blowing up themselves! Talk about ingrates! Plus they also almost destroyed DS9 (in fact they did it in an alternate timeline).