In early 1595 Sigismund Báthory, Prince of Transylvania, convinced Ștefan Răzvan, a commander of Hungarian mercenaries in the service of the then Hospodar Aaron the Tyrant to rebel. Ștefan captured Aaron and sent him to Transylvania, then proclaimed himself as the new Hospodar and a vassal of Sigismund. In response the Ottoman Sultan Mehmed III, who had been Aaron's protector and sovereign, decided to put an end to the ongoing power struggles in Moldavia, Wallachia, and Transylvania between various magnates. While Wallachia was to receive a new Turkish sponsored ruler, Moldavia was to be simply incorporated into the Ottoman Empire as a province. The Ottoman intervention aroused alarms in the Polish–Lithuanian Commonwealth which sought to reestablish its influence in the region, having lost sovereignty over Moldavia some hundred years earlier after the Battle of the Cosmin Forest.