Middle of XII century
Baldvin II inherited his daughter Melisenda, which ruled together with her husband Fulkom Angevin. During their reign had reached the largest cultural and economic development, which is a symbol - Melisendy Psalter, commissioned by the Queen between 1135 and 1143 years. Fulk, a famous commander, faced with a dangerous new enemy - Atabekov Mosul Zeng. Although Fulk successfully resisted Zeng during his reign, Guillaume Tire criticized him for poor border security. Fulk died in the hunt in 1143. Zeng made use of that county, and took Edessa in 1146. Queen Melisanda became regent when his son Baldvin III, appointed a new D'Ierzh Manasse, who headed the army after the death of Fulka. In 1147 the Kingdom of the profit participants of the Second crusade.
Meeting in Tripoli, the leaders of the Crusaders, King Louis VII of France and King of Germany Conrad III, decided to attack the friendly Kingdom of the Emir of Damascus, as the most vulnerable opponent, despite an agreement between Damascus and Jerusalem kingdom. It was a complete contradiction of the advice of Melisandy and Manasse, consider to be the major enemy - Aleppo, a victory which gave an opportunity to return Edessu. Crusade in 1148 ended in complete failure. Melisanda ruled the country as regent until Baldvin III did not overthrew its government in 1153, but already next year Baldvin appointed her as regent and chief advisor. Baldvin III selected from Ashkelon Fatimidov, the last outpost on the Egyptian Palestinian coast. At the same time, the overall situation has deteriorated States, as well as Nur al-Din conquered Damascus and united Muslim Syria under his authority.
Baldvin III died in 1162, a year later, his mother, he inherited his brother, Amor. His rule was accompanied by a confrontation with Nur al-Din and insidious attempts to prevent the seizure of Egypt, Saladin. Although, with the support of the Byzantine emperor, Manuel Komnina, Amor failed military operation against Egypt. Amor and Nur al-Din died in 1174.