This is absolutely true, and there’s a mountain of evidence that Stalin considered himself to have lost World War II. Gigantic new gains in Europe, yet Stalin thought it was a defeat because no gains are enough unless you conquer everything. His was an ideology that needs to dominate totally. Knowing that there’s one person somewhere in Timbuktu or Patagonia who deep inside disagrees with the ideology is perceived as a terrible, unbearable injury.
Stalin is long dead but there are so many little stalins who feel mortally wounded because somebody somewhere disagrees.