Vizier (Fatimid Caliphate) in the context of "Al-Adid"

The Ayyubid dynasty (Arabic: الأيوبيون, romanized: al-Ayyūbīyūn), also known as the Ayyubid Sultanate, was the founding dynasty of the medieval Sultanate of Egypt established by Saladin in 1171, following his abolition of the Fatimid Caliphate of Egypt. A Sunni Muslim of Kurdish origin, Saladin had originally served the Zengid ruler Nur al-Din, leading the latter's army against the Crusaders in Fatimid Egypt, where he was made vizier. Following the death of his Zengid suzerain Nur al-Din in 1174, Saladin was proclaimed as the first Sultan of Egypt by the Abbasid Caliphate, and rapidly expanded the new sultanate beyond Egypt to encompass most of Syria, in addition to Hijaz, Yemen, northern Nubia, Tripolitania and Upper Mesopotamia. Saladin's military campaigns set the general borders and sphere of influence of the sultanate of Egypt for the almost 350 years of its existence. Most of the Crusader states fell to Saladin after his victory at the Battle of Hattin in 1187, but the Crusaders reconquered the Syrian coastlands in the 1190s.

After Saladin's death in 1193, his sons contested control of the sultanate, but Saladin's brother al-Adil ultimately became sultan in 1200. All of the later Ayyubid sultans of Egypt were his descendants. In the 1230s, the emirs of Syria attempted to assert their independence from Egypt and the Ayyubid realm remained divided until Sultan as-Salih Ayyub restored its unity by subduing most of Syria, except Aleppo, by 1247. By then, local Muslim dynasties had driven out the Ayyubids from Yemen, the Hejaz, and parts of Mesopotamia. After his death in 1249, as-Salih Ayyub was succeeded in Egypt by his son al-Mu'azzam Turanshah. However, the latter was soon overthrown by his Mamluk generals who had repelled a Crusader invasion of the Nile Delta. This effectively ended Ayyubid power in Egypt. Attempts by the emirs of Syria, led by an-Nasir Yusuf of Aleppo, to wrest back Egypt failed. In 1260, the Mongols sacked Aleppo and conquered the Ayyubids' remaining territories soon after. The Mamluks, who expelled the Mongols, maintained the Ayyubid principality of Hama until deposing its last ruler in 1341.

Salah ad-Din Yusuf ibn Ayyub (c. 1137 – 4 March 1193), commonly known as Saladin, was a Kurdish commander and political leader. He was the founder of the Ayyubid dynasty and the first sultan of both Egypt and Syria. An important figure of the Third Crusade, he spearheaded the Muslim military effort against the Crusader states in the Levant. At the height of his power, the Ayyubid realm spanned Egypt, Syria, Upper Mesopotamia, the Hejaz, Yemen, and Nubia.

Alongside his uncle Shirkuh, a Kurdish mercenary commander in service of the Zengid dynasty, Saladin was sent to Fatimid Egypt in 1164, on the orders of the Zengid ruler Nur ad-Din. With their original purpose being to help restore Shawar as the vizier to the teenage Fatimid caliph al-Adid, a power struggle ensued between Shirkuh and Shawar after the latter was reinstated. Saladin, meanwhile, climbed the ranks of the Fatimid government by virtue of his military successes against Crusader assaults and his personal closeness to al-Adid. After Shawar was assassinated and Shirkuh died in 1169, al-Adid appointed Saladin as vizier. During his tenure, Saladin, a Sunni Muslim, began to undermine the Fatimid establishment; following al-Adid's death in 1171, he abolished the Cairo-based Isma'ili Shia Muslim Fatimid Caliphate and realigned Egypt with the Baghdad-based Sunni Abbasid Caliphate.

Shawar ibn Mujir al-Sa'di (Arabic: شاور بن مجير السعدي, romanized: Shāwar ibn Mujīr al-Saʿdī; died 18 January 1169) was the de facto ruler of Fatimid Egypt, as its vizier, from December 1162 until his assassination in 1169 by the general Shirkuh, the uncle of the future Ayyubid leader Saladin, with whom he was engaged in a three-way power struggle against the Crusader Amalric I of Jerusalem. Shawar was notorious for continually switching alliances, allying first with one side, and then the other, and even ordering the burning of his own capital city, Fustat, just so that the enemy could not have it.

The Ayyubid dynasty (Arabic: الأيوبيون, romanized: al-Ayyūbīyūn), also known as the Ayyubid Sultanate, was a Sunni Muslim Kurdish dynasty that founded the medieval Sultanate of Egypt, which was established by Saladin in 1171, following his abolition of the Fatimid Caliphate. Saladin had originally served the Zengid ruler Nur al-Din, leading the latter's army against the Crusaders in Fatimid Egypt, where he was made vizier. Following the death of his Zengid suzerain Nur al-Din in 1174, Saladin was proclaimed as the first Sultan of Egypt by the Abbasid Caliphate, and rapidly expanded the new sultanate beyond Egypt to encompass most of Syria, in addition to Hejaz, Yemen, northern Nubia, Tripolitania and Upper Mesopotamia. Saladin's military campaigns set the general borders and sphere of influence of the sultanate of Egypt for the almost 350 years of its existence. Most of the Crusader states fell to Saladin after his victory at the Battle of Hattin in 1187, but the Crusaders reconquered the Syrian coastlands in the 1190s.

After Saladin's death in 1193, his sons contested control of the sultanate, but Saladin's brother al-Adil ultimately became sultan in 1200. All of the later Ayyubid sultans of Egypt were his descendants. In the 1230s, the emirs of Syria attempted to assert their independence from Egypt and the Ayyubid realm remained divided until Sultan as-Salih Ayyub restored its unity by subduing most of Syria, except Aleppo, by 1247. By then, local Muslim dynasties had driven out the Ayyubids from Yemen, the Hejaz, and parts of Mesopotamia. After his death in 1249, as-Salih Ayyub was succeeded in Egypt by his son al-Mu'azzam Turanshah. However, the latter was soon overthrown by his Mamluk generals who had repelled a Crusader invasion of the Nile Delta. This effectively ended Ayyubid power in Egypt. Attempts by the emirs of Syria, led by an-Nasir Yusuf of Aleppo, to wrest back Egypt failed. In 1260, the Mongols sacked Aleppo and conquered the Ayyubids' remaining territories soon after. The Mamluks, who expelled the Mongols, maintained the Ayyubid principality of Hama until deposing its last ruler in 1341.

Abū Tamīm Maʿad al-Mustanṣir biʾllāh (Arabic: أبو تميم معد المستنصر بالله‎; 2 July 1029 – 29 December 1094) was the eighth Fatimid Caliph from 1036 until 1094. He was one of the longest reigning Muslim rulers. His reign was the twilight of the Fatimid state. The start of his reign saw the continuation of competent administrators running the Fatimid state (Anushtakin, al-Jarjara'i, and later al-Yazuri), overseeing the state's prosperity in the first two decades of al-Mustansir's reign. However, the break out of court infighting between the Turkish and Berber/Sudanese court factions following al-Yazuri's assassination, coinciding with natural disasters in Egypt and the gradual loss of administrative control over Fatimid possessions outside of Egypt, almost resulted in the total collapse of the Fatimid state in the 1060s, before the appointment of the Armenian general Badr al-Jamali, who assumed power as vizier in 1073, and became the de facto dictator of the country under the nominal rule of al-Mustansir.

The caliph al-Mustanṣir bi-llāh was the last Imam before a disastrous split divided the Isma'ili movement in two, due to the struggle in the succession between al-Mustansir's older son, Nizar, and the younger al-Mustaʽli, who was raised to the throne by Badr's son and successor, al-Afdal Shahanshah. The followers of Nizar, who predominated in Iran and Syria, became the Nizari branch of Isma'ilism, while those of al-Musta'li became the Musta'li branch.