>>93383570i would worry about a retailiation from the allied mutant bubblegum "princess". no telling what kind of technology she may have. they already have giant guardians with anti air capabilities amoung others.
most other kingdoms are not much of a threat. while "magic" users are a commonplace, they are too divided save for a scant few. but the idea of a barrier strong enough to resist a nuke is highly unlikely due to the lack of coordination of these "wizards". but they are still problematic for foot troops, so cleanup may run into a few rogue survivors.