Why would you want war? This is a political game, focusing on issues, not a world conquering game... You want world conquering, this is probably not the right game for you. The closest you get is the nuke battles and Z-Day every so often.
But from the FAQs page (
https://www.nationstates.net/page=faq)
"Can I make a resolution to add war to the game?
No. Well, you can, but I'm still not going to add war. The WA is not there to request new game features. I admit this would be nice: propose a change, vote it through, and BAM! The game gets better. But then, I would have to make the BAM! part happen. It would require me to spend so much time rewriting game code that I wouldn't be able to pursue my real passion, which is earning enough money to buy food, and staying sane.
WA resolutions are a way to bring all member nations into line on a particular issue; be that environmental, democratic, free trade, or whatever. Don't suggest game improvements there. They just clutter up the place. And they make people think, "Hey, yeah, that would be cool! Why doesn't that bum Max Barry get off his ass and do that?" I get e-mails."
Probably gives you a good indication this isn't gonna happen....