Editing Kingdom of Jerusalem (section)

=== {{anchor|The Kingdom of Acre}}Kingdom of Acre ===
For the next hundred years, the Kingdom of Jerusalem remained a tiny kingdom hugging the Syrian coastline. Its capital was moved to Acre and controlled most of the coastline of present-day Israel and southern and central Lebanon, including the strongholds and towns of Jaffa, Arsuf, Caesarea, Tyre, Sidon, and Beirut. At best, it included only a few other significant cities, such as Ascalon and some interior fortresses, as well as [[suzerainty]] over Tripoli and Antioch. The new king, Henry of Champagne, died accidentally in 1197, and Isabella married for a fourth time, to [[Aimery of Jerusalem|Aimery of Lusignan]], Guy's brother. Aimery had already inherited Cyprus from Guy, and had been crowned king by Frederick Barbarossa's son, Emperor [[Henry VI, Holy Roman Emperor|Henry VI]]. Henry led a [[Crusade of 1197|crusade in 1197]] but died along the way. Nevertheless, his troops recaptured Beirut and Sidon for the kingdom before returning home in 1198.{{Sfn|Edbury|1991|pp=31–33}}<ref>Riley-Smith, ''The Crusades: A History'' (2nd ed., Yale University Press, 2005), pp. 146–147.</ref> A five-year truce was then concluded with the Ayyubids in Syria in 1198.<ref>Riley-Smith, ''The Crusades: A History'', p. 150.</ref>

The Ayyubid empire had fallen into civil war after the death of Saladin in 1193. His sons claimed various parts of his empire: [[Malik az-Zahir|az-Zahir]] took control of Aleppo, [[al-Aziz Uthman]] held Cairo, while his eldest son, [[al-Afdal ibn Salah ad-Din|al-Afdal]], retained Damascus. Saladin's brother [[Al-Adil I|Al-Adil Sayf ad-Din]] (often called "Saphadin" by the Crusaders) acquired [[Al-Jazira, Mesopotamia|al-Jazira]] (northern Mesopotamia), and al-Adil's son [[Al-Mu'azzam Isa|al-Mu'azzam]] took possession of [[Al Karak|Karak]] and [[Oultrejordain|Transjordan]]. In 1196, al-Afdal was driven out of Damascus by al Adil in alliance with Uthman. When Uthman died in 1198, al Afdal returned to power as regent in Egypt for Uthman's infant son. Allied with az-Zahir, he then attacked his uncle in Damascus. The alliance fell apart, and al-Adil then defeated al Afdal in Egypt and annexed the country. In 1200 Al-Adil proclaimed himself Sultan of Egypt and Syria, entrusting Damascus to al-Mu'azzam and al-Jazira to another son, [[al-Kamil]]. Following a second unsuccessful siege of Damascus by the two brothers, Al Afdal accepted a fief consisting of [[Samosata]] and a number of other towns. Az-Zahir of Aleppo submitted to his uncle in 1202, thus re-uniting the Ayyubid territories.<ref>Humphreys, pp. 111–122</ref>

Meanwhile, schemes were hatched to reconquer Jerusalem through Egypt. A [[Fourth Crusade]] was planned after the failure of the Third, but it resulted in the [[Siege of Constantinople (1204)|sack of Constantinople]] in 1204, and most of the crusaders involved never arrived in the kingdom. Aimery, however, not knowing of the diversion to Constantinople, raided Egypt in advance of the expected invasion.<ref>Riley-Smith, ''The Crusades: A History'', pp. 153–160.</ref> Both Isabella and Aimery died in 1205 and again an underage girl, Isabella and Conrad's daughter [[Maria of Montferrat]], became queen of Jerusalem. Isabella's half-brother [[John of Ibelin, the Old Lord of Beirut]] governed as regent until 1210 when Maria married an experienced French knight, [[John of Brienne]].{{Sfn|Edbury|1991|pp=40–41}} Maria died in childbirth in 1212, and John of Brienne continued to rule as regent for their daughter [[Isabella II of Jerusalem|Isabella II]].{{Sfn|Edbury|1991|p=48}}