The rebellion against the hetman grows, and…

The rebellion against the hetman grows, and comes to a head when Vyhovsky's forces clash with the pro-Russian Cossacks in June of 1658.

Vyhovsky's forces prevail, killing Pushkar and forcing Barabash to flee (he will later be captured and executed).

However, it has clearly been a fratricidal conflict, resulting in some 50,000 deaths.