In 1659 he was forced to sign the Pereiaslav Articles , which were often confused with the treaty itself .
1659 - 63 : Yurii Khmelnitsky : Russia and Poland : The hetmanate passed to Bohdan 's son Yurii Khmelnytsky who was now about 18 .
In 1659 Yurii Khmelnytsky was forced to sign the Pereiaslav Articles , which were often confused with the treaty itself .
1659 - 63 : Yurii Khmelnitsky : Russia and Poland : The hetmanate passed to Bohdan 's son Yurii Khmelnytsky who was now about 18 .