Margraviate of Meissen
Conrad, seeking to relieve pressure on the Lutici, counter-invaded Poland in 1029 and besieged Bautzen in the Margraviate of Meissen. However, faced with a potential invasion by Hungary and the failure of the Lutici to provide their promised contingent of troops, Conrad retreated. In 1030, Poland secured an alliance with Hungary, with Stephen I invading Bavaria while Mieszko invaded Saxony. Conrad responded by allying with Yaroslav the Wise, Grand Prince of Kiev, who captured Red Ruthenia, on Poland's eastern border. In 1031, Conrad concluded a peace treaty with Hungary by ceding territory in eastern Carinithia to Hungarian control. Freed from the threat of Hungarian attack, the Emperor was able to focus his attention on Poland. Marching on Mieszko in autumn 1031, Conrad again besieged Bautzen. Mieszko was crushed by the Holy Roman and Kievan invaders and his exiled brother Bezprym's rebellion. He surrendered to Conrad in the fall of 1031. The Treaty of Merseburg provided that Mieszko return the Margraviate of Meissen and the March of Lusatia to the Empire.