Henryk IV Probus
In terms of foreign policy, Konrad II continued the line of his father, working closely with Bolesław V the Chaste, Leszek II the Black and Bolesław the Pious. He fought alongside Hungary in the war which opposed Bohemia for the Babenberg inheritance. In 1271 became part of a coalition against Henryk IV Probus, to prevent it from providing support to the Bohemian King Ottokar II. Two years later, the same coalition attacked Władysław Opolski who during the general confusion for the Bohemian-Hungarian war, tried to obtain the Seniorate from Bolesław V, but without results.