Alba-Vik gave me an idea yesterday! The Third Great War will take place when numerous regions rebel against Germania with the help of the Russian Empire. The regions become satellites of Moscow. Then, Russia attempts to form satellites in the Chinese states, finally working its way down to Indochina. When they start funneling guns to anti-French rebels, France asks for assistance from its close allies California and the CSA, thus starting the Indochina Intervention. Japan also helps the French against their mortal enemy Russia. The guerrilla wars drag on, with Germania and Scandinavia losing more and more territory to Russia. Finally, Russia and its allies go to war against France, Germania, Scandinavia, California, CSA, Italy, Deseret, Brazil, and Japan, with the help of Indochina, Mongolia, Bulgaria, Kingdom of the Czechs, Romania, Slovakia, Greece, and the Russian-sponsored Brazilian rebels.
This should be quite exciting.
And, no, the US does not exist anymore at this point. Prepare for Nukeation in the Second Great War in the 50's.