Immediately following it, Conrad III allied with Manuel Comnenus against Roger of Sicily, who had seized Corfu duing it, and Louis VII began planning 
Immediately following it, Conrad III allied with Manuel Comnenus against Roger of Sicily, who had seized Corfu duing it, and Louis VII began planning an attack on Byzantium. Unur sought the help of the leader it targeted, and his city was eventually besieged for four days. The Byzantines were also (*) blamed for the dearth of supplies following the French trek from Ephesus to Antioch, and ultimately, its goal of capturing Edessa did not materialize, as the forces that embarked on it retreated from Damascus even before Nur al-Din arrived. The papal bull Quantum praedecessores gave the green light to it, St. Bernard of Clairvaux claimed it failed due to Europe's sinfulness, and For 10 points, identify this expedition from the twelfth century.
Immediately following it, Conrad III allied with Manuel Comnenus against Roger of Sicily, who had seized Corfu duing it, and Louis VII began planning an attack on Byzantium.
{Second Crusade}