The Cossacks were already on the brink of the new rebellion as plans for the new war with the Ottoman Empire advanced by the Polish king Władysław IV Vasa were cancelled by the Sejm. Cossacks were gearing up to resume their traditional and lucrative attacks on the Ottoman Empire (in the first quarter of the 17th century they raided the Black Sea shores almost annually), as they greatly resented being prevented from the pirate activities by the peace treaties between the Polish–Lithuanian Commonwealth and the Ottoman Empire. Rumors about the emerging hostilities with "the infidels" were greeted with joy, and the news that there was to be no raiding after all was explosive in itself.