After Russia falls, All forces would converge on the Chinese. At this point India may be called upon as well.
In the years that follow remant communist regimes like myanmar and venezula would be overthrown and the world would be PURGED of the great communist evil that has afflicted us. Furthermore Greece will be retaken by Turkey. Greeks made gays and are commie so they should be fixed.
The USA would get huge swaths of uninhabited Eastern Russia for energy purposes. Japan would get chunks of China and Russia. Mongolia would retake S Mongolia if they eventaully joined. Tibet would be freed. Korea would be reunited. India would retak fallen territoiries. All nations that join in the South China sea area would retake their lost territories. Turkey would take East Turkestan and all turkic parts of Russia. S cyprus may be given to israel with deportation of all s cypriots to greece (or become a territory S Cyprus is communist after all/ However Turkey may take it as well and should take it, unknown at moment the fate of S Cyprus) Israel for sure would get chunks of southern Syria if Syria is involved. Georgia would get back it's lost territories. Just like after WW2 The USA would remake the politcal map in their favor and probably dominate for the next 50+ years.
The U.S.A. REIGNS SUPREME