In the course of the fighting, Kmel’nyts’kyi came to ally directly with Muscovy in 1654: a move of huge significance for the future. Nearly two decades marked by exceptional atrocities left the Commonwealth shattered, perhaps a third of its population dead; it was the beginning of its long decline towards eighteenth-century partition and oblivion, and also the beginning of a long identity crisis between East and West for the Ukrainian people.
