With Fire and Sword by Henryk Sienkiewicz — Read

Hmelnitski remained awhile at Korsún, and then pushed on to Bélaya Tserkoff, where he established his capital. The horde was disposed in camp on the other side of the river, sending out parties through the whole province of Kiev. Pan Longin Podbipienta therefore had been grieving in vain over the dearth of Tartar heads. Skshetuski foresaw correctly that the Zaporojians seized by Ponyatovski at Kanyeff gave false information. Tugai Bey not only had not departed, but had not gone even to Chigirin. What is more, new Tartar reinforcements came from every side. The petty sovereigns of Azoff and Astrakhan, who had never been in Poland before, came with four thousand warriors. Twelve thousand of the Nogai horde came, and twenty thousand of the Bélgorod and Budjak hordes -- all sworn enemies hitherto of the Zaporojians and the Cossacks, now brothers and sworn allies against Christian blood. Finally the Khan Islam Giréi himself came with twelve thousand from Perekop. The whole Ukraine suffered from these friends; not only the nobles suffered, but the Russian people, whose villages were burned, cattle driven away, and whose wives and children were hurried into captivity. In those times of murder, burning, and bloodshed there was only one rescue for the peasant, and that was to flee to Hmelnitski -- where from being a victim he became a destroyer, and ravaged his own country; but at least his life was safe. Unhappy country! When rebellion broke out in it Pan Nikolai Pototski punished and wasted it to begin with; then the Zaporojians and the Tartars, who came as if for its liberation; and now Yeremi Vishnyevetski hovered over it.

Therefore all who were able fled to Hmelnitski's camp; even nobles fled, for other means of safety were not to be found. Thanks to this, Hmelnitski increased in power; and if he remained long in Bélaya Tserkoff and did not move at once to the heart of the Commonwealth, it was above all to give order to these lawless and wild elements.