The Second Crusade (1147–1149) was the second major crusade launched by the Roman Catholic Church, called in 1145 in response to the fall of the County of Edessa the previous year. The Second Crusade was announced by Pope Eugene III, and was the first of the crusades to be led by European kings. The armies of the French and the German kings marched separately across Europe and were somewhat hindered by Byzantine emperorManuel I Comnenus. Prior to the arrival of the Crusaders, Manuel had broken off his military campaign against the Sultanate of Rüm and signed a truce with his enemy Sultan Mesud I. This was done so that Manuel would be free to concentrate on defending his empire from the Crusaders, who had gained a reputation for theft and treachery since the First Crusade and were widely suspected of harbouring designs on Constantinople. Some of the French were outraged by Manuel's truce with the Seljuks and called for an alliance with Roger II of Sicily and an attack on Constantinople, but they were restrained by their King.