The "strong" does only what the degree of resistance of the "weak" allows.
One of the features of the Ukrainian resistance is that the Ukrainians, as it were, reversed the famous formula of Thucydides (in the mouth of the Athenians, if more precisely) from the "Melos dialogue": "The strong do what they can, and the weak tolerate what they must." Looking back today at the entire period of the full-scale invasion (which the Kremlin expected to complete in weeks, if not days, and which has already lasted longer than the Second World War), you can see how the Ukrainians reinvented a new formula for themselves, two and a half thousand years after Thucydides: The "strong" does only what the degree of resistance of the "weak" allows. And this formula is not limited only to the struggle of Ukrainians.