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To the modern mind, which views national sovereignty as a natural condition (although the concept did not gain wide currency until after the French Revolution of 1789), the question arises of why Khmelnytsky did not declare independence for Ukraine. During the uprising there were, in fact, rumors to the effect that he wished to reestablish the "old Rus' principality," and even that he planned to form a separate "Cossack principality." Although such ideas may have been considered, it would have been impossible under the circumstances to realize them.
As the interminable wars demonstrated, the Cossacks, although able to administer severe defeats to the Poles, were incapable of permanently preventing the szlachta from launching repeated efforts to regain Ukraine. To assure themselves of a lasting victory over the Poles, Khmelnytsky needed the continuing and reliable support of a major foreign power. The usual price of such aid was acceptance of the overlordship of the ruler who provided it. In the view of the masses, the main thrust of the uprising was to redress socioeconomic ills, and to many in Ukraine the question of whether these problems were to be resolved under their own or under foreign rule was of secondary importance.
Finally, in 17th-century Eastern Europe, sovereignty rested not in the people, but in the person of a legitimate (that is, generally recognized) monarch. Because Khmelnytsky, despite his popularity and power, did not possess such legitimacy, he had to find for Ukraine an overlord who did. At issue was not self-rule for Ukraine, for Ukrainians already had gained it. Their goal was to find a monarch who could provide their newly formed autonomous society with legitimacy and protection.
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