The
Twenty Years' Anarchy is a term used for the period of acute internal instability in the
Byzantine Empire, marked by the rapid succession of several emperors to the throne between the first deposition of
Justinian II in 695 and the ascent of
Leo III the
Isaurian to the throne in 717, marking the beginning of the
Isaurian dynasty.
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Hagia Sophia, originally constructed as a church between 532 and 537 |
Justinian II, was the
Byzantine Emperor, reigning from 685 to 695 and again from 705 to 711.
Justinian II was an ambitious and passionate ruler who was keen to restore the
Roman Empire to its former glories, but he responded poorly to any opposition to his will and lacked the finesse of his father,
Constantine IV.
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Coin of Justinian II |
Justinian II set in motion a chain of events by embarking on a despotic and increasingly violent course. His policies met with considerable opposition, eventually provoking a rebellion led by
Leontios (695–698) in 695, which deposed and exiled him, precipitating a prolonged period of instability and anarchy, with seven emperors in twenty-two years.
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Leontios |
Leontios was
Byzantine emperor from 695 to 698. He led forces against the
Umayyads during the early years of
Justinian's reign, securing victory and forcing the
Umayyad caliph,
Abd al-Malik ibn Marwan, to sue for peace. He led a rebellion against
Justinian, and seized power, becoming emperor in 695 CE. He led a march on the guards barracks, freeing those who were imprisoned by
Justinian for opposing him. His force was joined by a host of
Blues supporters, and then marched to the
Hagia Sophia.
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Mural in Hagia Sophia, Istanbul |
Leontios proved equally unpopular and was in turn overthrown by
Tiberios III (698–705). As emperor, he made the tactical decision to ignore
Africa, where
Carthage was now definitively lost. Instead, he appointed his brother
Heraclius as monostrategos of the
East, who firstly strengthened the land and sea defences of
Anatolia before proceeding to attack the
Umayyad Caliphate under
Abd al-Malik, winning minor victories while raiding into northern
Syria in 700 and 701.
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Ven, Turkey(Former part of Anatolia) |
Tiberios managed to bolster the eastern frontier and reinforced the defenses of Constantinople, but meanwhile Justinian was conspiring to make a comeback and after forming an alliance with the Bulgars succeeded in taking Constantinople and executing Tiberios. His second reign was marked by unsuccessful warfare against Bulgaria and the Caliphate, and by cruel suppression of opposition at home.
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Restored walls of Constantinople |
Justinian II then continued to reign for a further six years (705–711). In 708 he turned on
Bulgarian Khan Tervel, whom he had earlier crowned
Caesar, and invaded
Bulgaria. The
Emperor was defeated, blockaded in
Anchialus, and forced to retreat. Peace between
Bulgaria and
Byzantium was quickly restored. This defeat was followed by
Arab victories in
Asia Minor, where the cities of
Cilicia fell into the hands of the enemy, who penetrated into
Cappadocia in 709–711.
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Landscape view of Cappadocia |
His treatment of
Tiberios and his supporters had been brutal and he continued to rule in a manner that was despotic and cruel. He lost the ground regained by
Tiberios in the east, and imposed his views on the
Pope John VII. However, before long he faced a rebellion led by
Philippikos Bardanes (711–713). Justinian was captured and executed as was his son and co-emperor,
Tiberius (706–711), thus extinguishing the
Heraclian line.
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Pope John VII |
Philippikos' rebellion after executing emperor
Justinian and his son co - emperor
Tiberius in 711, extended beyond politics to religion, deposing the
Patriarch Cyrus and reestablishing
Monothelitism. Militarily the
Bulgars reached the walls of Constantinople, and moving troops to defend the capital allowed the
Arabs to make incursions in the east. His reign ended abruptly when an army rebellion deposed him and replaced him with
Anastasius II (713–715).
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Bulgars |
Emperor Anastasius in 713 reversed his predecessor's religious policies and responded to Arab attacks by sea and land, this time reaching as far as
Galatia in 714, with some success.
Anastasios attempted to restore peace by diplomatic means. His emissaries having failed in
Damascus, he undertook the restoration of
Constantinople's walls and the rebuilding of the
Roman fleet.
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A representation of Roman Fleet at Byzantium |
The on death of the
Caliph al-Walid I in 715,
Emperor Anastasius dispatched an army under
Leo the Isaurian, afterwards emperor, to invade
Syria, and he had his fleet concentrate on
Rhodes with orders not only to resist the approach of the enemy but to destroy their naval stores. However the very army that had placed him on the throne (the
Opsikion army) rose against him, proclaimed a new emperor and besieged
Constantinople for six months, eventually forcing
Anastasius to flee.
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Coin of Leo III the Isaurian |
The troops had proclaimed
Theodosius III (715–717) as the new emperor, and once he had overcome
Anastasius was almost immediately faced with the
Arab preparations for the
Second Arab siege of Constantinople (717–718), forcing him to seek assistance from the
Bulgars. He in turn faced rebellion from two other themata,
Anatolikon and
Armeniakon in 717, and chose to resign, being succeeded by
Leo III (717–741) bringing an end to the cycle of violence and instability, end to Twenty year's anarchy period.
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Second siege of Constantinople |