Mongols defeated Russia, Polish-Lithuanian Commonwealth defeated Russia, Russia was pretty much defeated by Germany in WWI but survived because Germany got defeated by GB, US and France. Then Communist Bolsheviks defeated Russia. Also it is doubtful that Russia would survive without economic help of US during WWII. Most of explosive materials and radio equipment (between tanks communication) came from US together with 300,000 Studebaker trucks and jeeps, and best Russian soldier food Tushonka, and many more.