The question for the overall win would be whether, without nukes, we could prevent the rest of the world from eventually building military hardware and mobilizing to their full potential (which could be of course overwhelming).
Are we going to relax while they do this? What advantage would a bombed to sh**t world have the second go around that they didn't have the first time?
Well, my point was just that we'd have to 'keep them down' forever, either by bombing or by occupying them..
Assuming we're talking about unending war with no diplomatic solution, probably the most effective method would be to physically occupy the Western Hemisphere, Australia, UK and other islands, and most importantly the oil in the Middle East, and then just engage in a program of keeping the rest primitivized through bombing or some other methods.
