Vasile Lupu, the ruler of the principality, maintained friendly relations with Bohdan Khmelnytsky from October 1648, but he also sent information about the state of the Zaporozhian Army to Warsaw and lent the royal government money to hire soldiers.

Having crossed the Dniester with the Tatars, the hetman surprisingly occupied Lasi in September 1650, and then demanded an alliance in an ultimatum, which was to be secured by the marriage of the voivode's daughter Rosanda to Khmelnytsky's son Tymofiy.

The prince reached an agreement on joint actions with the ruler of Wallachia, Matvii Basarab, who was helping the Moldavian logothet Gheorge prepare another dynastic coup.

He interfered in the internal affairs of the state vassally dependent on the Porte, with the support of the Sultan's government (which agreed to the transition of both Danube principalities under Khmelnytsky's influence); but the appearance of Cossack forces in Moldavia on the side of Vasile Lupu meant hostile actions against Wallachia and Transylvania, which immediately made their rulers allies of the Polish-Lithuanian Commonwealth in the fight against the Hetmanate.

The second dangerous mistake was the appointment of Tymosh's son, who was brave, but hot-tempered and inexperienced in military affairs and political intrigues, as commander-in-chief of the Cossack corps instead of the talented commander Ivan Bohun.

His title in a letter to Vasile Lupu "Tymosh Khmelnytsky Hetman of the Zaporozhian Army" is noteworthy, as it does not include the term "commanding officer", which he was in fact.

[citation needed] The Cossack colonels tried to persuade the commander not to take this rash step, since Bohdan Khmelnytsky had not given instructions to fight with Wallachia or Transylvania.

However, having felt the taste of power, Tymofiy, incited by his father-in-law, gave free rein to his feelings: he grabbed a saber and wounded Ivan Bohun (according to other sources, General Osavul Demian Lysovets).

When the news of the defeat reached the Cossack army on the march to Kamianets, it triggered a massive protest against Hetman Bohdan Khmelnytsky's policy, which apparently took place on 20 June 1653 in the camp near Horodok.

The news of the severe defeat was the last straw in the face of acute food and fodder shortages, growing discontent among the soldiers with the plundering of the Tatars, and the threat of a pestilence epidemic.

Surrounding the hetman's carriage, "the Cossacks with great impoliteness" began to reproach him for the length of the war, the devastation of cities, the famine that was causing their wives and children to die, the military and political alliance with the khan, who "filled the whole Crimea with us," indulging his son, and so on.

In mid-July, Bohdan Khmelnytsky sent a new embassy to Istanbul, explaining the reason for the deployment of troops to Moldavia, confirming his agreement to accept the Sultan's patronage, and asking for help.

In his place, the elders elected Colonel Mykola (or Mykhailo) Fedorovych, allegedly a nobleman by birth (there is also information that he was deposed from the hetmanate for some time by a certain Martyn, but then returned to his position).

A day later, on honourable terms, with banners outstretched, banging drums, along with a cart containing the body of Tymofiy Khmelnytsky, the Cossacks left the fortress.

About 500 of them were slaughtered by Polish troops taking revenge for the massacre after the Battle of Batoh, but most of the Cossack army left Moldavia and returned to Ukraine.

[9] The attempt of the Khmelnytsky family to enter the world of diplomatic relations with the most important royal courts in Europe came to an end in the Moldavian city of Suceava.

As a result of this defeat, Bohdan Khmelnytsky abandoned the Moldavian direction of his policy and began negotiations with Russia, soon placing himself under the protection of the Russian Tsar in the Treaty of Pereyaslav.