World wars are done with buddy. That was yesterdays game, just how first world nations don't attack with spears anymore. The new stuff relies on cyber hindrance, proxy fighting, trade ties/embargoes/debts/monopolizing, doxing actions into the spheres of public opinion.
military units are now reserved for interactions with one participant being a small undeveloped country. Bo one wants to loose their kingdom by dropping a nuke on someone else that has nukes. To think a new world war in the traditional sense likely without a deus ex is to miss the big picture and miss the opportunity to ones own right to sit in.
Seriously think it over and come play the game with the rest if ya really want to brawl for fortunate existence. As for me I just stick to my own niche and thrive in my entertainments, I don't really care about what nations and corporations decide to do to eachother