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The Third Perso-Turkic War was the third and final conflict between the Sassanian Empire and the Western Turkic Khaganate. Unlike both previous wars, it was fought west of Central Asia, in Transcaucasia. Hostilities were initiated in 627 AD by Khagan Tong Yabghu of the Western Göktürks and Emperor Heraclius of the Eastern Roman Empire. Opposing them were the Sassanid Persians, allied with the Eurasian Avars. The war was fought against the background of the last Byzantine-Sassanid War and served as a prelude to the dramatic events that changed the balance of powers in the Middle East for centuries to come (Battle of Nineveh, Islamic conquest of Persia).

Background

Following the First Siege of Constantinople by the Avars and Persians, the beleaguered Emperor Heraclius found himself politically isolated. He could not rely on the Christian potentates of Transcaucasia, since they were branded as heretics by the Orthodox Church, and even the king of Iberia preferred to befriend the religiously tolerant Persians. Against this dismal background, he found a natural ally in Tong Yabghu.

In 625, Heraclius dispatched to the steppes his emissary, named Andrew, who promised to the Khagan some "staggering riches" in return for military aid. The khagan, on his part, was anxious to secure the Chinese-Byzantine trade along the Silk Route, which had been disrupted by the Persians in the aftermath of the Second Perso-Turkic War. He sent word to the Emperor that "I shall take revenge on your enemies and will come with my valiant troops to your help". A unit of 1,000 horsemen fought their way through Persian Transcaucasia and delivered the Khagan's message to the Byzantine camp in Anatolia.

Siege of Derbent

Early in 627, the Göktürks and their Khazar allies approached the Caspian Gates at Derbent. This newly built stronghold was the only gate to the fertile land of Aghvania (modern-day Azerbaijan). Lev Gumilev observes that the lightly armed militia of Aghvania was no match against the hordes of heavy cavalry led by Tong Yabghu. His troops stormed Derbent and swarmed over Aghvania, plundering it thoroughly. The fall and sack of Derbent was described in detail by the local historian Movses Kagankatvatsi, thought to have been an eyewitness to the event:

Like waves in the sea, the Turks fell on the town of Chora (Derbent) and destroyed it completely. Seeing the terrible threat posed by this vile, ugly horde of attackers, with their slanting and lidless eyes, and their flowing hair like that of women, the inhabitants were seized by terror. Especially terrifying were the archers, who were skillful and powerful, and rained arrows down like hail then, like savage wolves, shamelessly through themselves on the people and mercilessly cut them down in the streets and squares of the town. They did not even take pity on the children who hugged their slaughtered mothers, but sucked the children's blood like milk.

The fall of the fortress that had been considered impregnable sparked panic all over the country. Aghvanian forces withdrew to their capital, Partav, from whence they made for the Caucasus Mountains. The Göktürks and Khazars overtook them near the village of Kalankatuyk, where they were either slain or taken prisoner. The conquerors imposed upon Aghvania a heavy system of taxation, as reported by Movses:

The Lord of the North wreaked havoc all over the country. He sent his wardens to deal with artisans of all kind, especially those skilled in washing out gold, extraction of silver and iron, as well as making copper items. He imposed duties on fishers and goods from the great Kura and Aras rivers, in addition to the didrachma traditionally levied by the Persian authorities.

Siege of Tfilis

The next objective of the Turkic-Byzantine offensive was the Kingdom of Iberia, whose ruler Stephen I was a tributary to Khosrau II of Persia. In the words of Movses Kagankatvatsi, the Khazars "encircled and besieged the famous and great sybaritic trade city of Tfilis", whereupon they were joined by Emperor Heraclius with his mighty army.

Heraclius and Tong Yabghu (called Ziebel in the Byzantine sources) met under the walls of Narikala. The yabghu rode up to the emperor, kissed his shoulder and made a bow. In return, Heraclius hugged the barbarian ruler, called him his son, and crowned him with his own diadem. During the ensuing feast the Khazar leaders received ample gifts in the shape of earrings and clothes, while the yabghu was promised the hand of the emperor's daughter, Eudoxia.

The siege dragged on without much progress, punctuated by frequent sallies on the part of the besieged; one of these claimed the life of their king. After two months the Khazars retreated to the steppe, promising to return by the autumn. Tong Yabghu left young Buri-sad, either his son or nephew, in charge of the remaining forty thousand which were to assist Heraclius during the siege. Before long these departed as well, leaving the Byzantines to continue the siege alone and prompting jeers from the besieged.

When the Georgians ironically referred to the Emperor as "the goat", hinting at his incestous marriage, Heraclius recalled a passage from the Book of Daniel about the two-horned ram overthrown by the one-horned goat. He interpreted this as a good sign and struck southward against Persia. On 12 December 627 he appeared on the bank of the Tigris and clashed with Persian forces near the ruins of Nineveh. In January he ravaged the environs of the Persian capital Ctesiphon, signalling a sea-change in the Persian-Byzantine relations.

Conclusion

After the triumph of Heraclius, Tong Yabghu hastened to resume the siege of Tfilis and successfully stormed the city in winter. "With their swords raised, they advanced on the walls, and all this multitude, climbing upon each other's shoulders, rose up the walls. A black shadow fell upon the wobegone citizens; they were vanquished and lost their ground", Movses narrates. Although the Georgians surrendered without further resistance, the city was looted and its citizens were massacred. The Persian governor and the Georgian prince were tortured to death in the presence of Tong Yabghu.

The Gokturks, renowned for their expertise in hand-to-hand combat, never excelled in siegecraft. For this reason Gumilev attributes the taking of Tfilis to the Khazars. There are good reasons for believing that this success encouraged Tong Yabghu to grander designs. This time he planned to incorporate Aghvania into his khaganate, rather than to wield a usual campaign of plunder. Before returning to Suyab he instructed Buri-sad and his generals to "spare the lives of the rulers and nobles of that land, inasmuch as they come out to meet my son, surrender to my rule, concede their towns, castles, and trade to my troops".

These words indicate that Tong Yabghu was eager to retain control of the westernmost portion of the Silk Route, as he tightened his grip of its other segments all the way east to China. In April 630 Buri-sad determined to expand his control of Transcaucasia and sent his general Chorpan Tarkhan with as little as 3,000 cavalry to invade Armenia. Using a characteristic ploy of nomadic warriors, Chorpan Tarkhan ambushed and annihilated a Persian force of 10,000 dispatched by Shahrbaraz to counter the invasion. Fortuitously for the Persians, the Western Turkic Khaganate broke up later that year and Buri-sad speedily evacuated Transcaucasia.

See also

• First Perso-Turkic War
• Second Perso-Turkic War

Notes

1. Gumilev 206.
2. Gumilev 205-208.
3. Movses 155.
4. Gumilev 216.
5. Movses 105.
6. Movses 131.
7. Movses 107
8. Artamonov 57.
9. Ibidem.
10. Movses 108.
11. Theophanes 236.
12. Movses 119-120.
13. Gumilev 222-223.
14. Movses 121.
15. Movses 132.
16. Movses 133.

References

• Artamonov, Mikhail. Essays on the Early History of the Khazars (Очерки ранней истории хазар). Leningrad, 1936.
• Gumilev, Lev. The Gokturks (Древние тюрки). Moscow: AST, 2007. ISBN 5170247931.
• Movses Kagankatvatsi. История агван Моисея Каганкатваци, писателя X века (trans. and ed. by Patkanov). St. Petersburg, 1861.
• Theophanes the Confessor. Летопись византийца Феофана от Диоклетиана... Moscow, 1890.

• Göktürks
• Wars involving Persia
• Battles involving the Khazars
• 627
• 628
• 629