Another thing Russian leaders know pretty well -- every invasion from the West ultimately failed. Invasions from the East, that's a different story. https://en

Another thing Russian leaders know pretty well -- every invasion from the West ultimately failed. Invasions from the East, that's a different story. https://en.wikipedia.org/wiki/Mongol_invasion_of_Rus%27 https://en.wikipedia.org/wiki/Mongol_invasion_of_Rus%27