Siege of Constantinople (674–678) 674

Recorded location from Wikidata; battle sites are often approximate.
Key facts
| Year | 674 | Wikidata P580 (start time) |
|---|---|---|
| Era | Medieval (500–1499) | derived from year |
| Location | Turkey | Natural Earth (modern borders) |
| Continent | Asia | Natural Earth |
| War / conflict | Arab–Byzantine wars | Wikidata P361 |
| Participants | Byzantine Empire, Umayyad Caliphate | Wikidata P710 |
| Coordinates | 41.0122, 28.9760 | Wikidata P625 |
About the battle
Constantinople was besieged by the Arabs in 674–678, in what was the first culmination of the Umayyad Caliphate's expansionist strategy against the Byzantine Empire. Caliph Mu'awiya I, who had emerged in 661 as the ruler of the Muslim Arab empire following a civil war, renewed aggressive warfare against Byzantium after a lapse of some years and hoped to deliver a lethal blow by capturing the Byzantine capital of Constantinople.
As reported by the Byzantine chronicler Theophanes the Confessor, the Arab attack was methodical: in 672–673 Arab fleets secured bases along the coasts of Asia Minor and then installed a loose blockade around Constantinople. They used the peninsula of Cyzicus near the city as a base to spend the winter and returned every spring to launch attacks against the city's fortifications. Finally the Byzantines, under Emperor Constantine IV, destroyed the Arab navy using a new invention, the liquid incendiary substance known as Greek fire. The Byzantines also defeated the Arab land army in Asia Minor, forcing them to lift the siege. The Byzantine victory was of major importance for the survival of the Byzantine state, as the Arab threat receded for a time.
Text adapted from the Wikipedia article Siege of Constantinople (674–678) (revision 1375961075), licensed under CC BY-SA 4.0. Changes: excerpted from the article lead section; shortened by selecting paragraphs and trimming at a sentence boundary; formatting and citations removed. No text added.
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Other battles of the Arab–Byzantine wars
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- Battle of Fahl 635
- Siege of Germanicia 638
- Battle of the Masts 655
- Siege of Tyana 707
- Siege of Constantinople (717–718) 717
- Siege of Nicaea (727) 727
- Battle of Akroinon 740
- Siege of Kamacha 766
- Battle of Kopidnadon 788
All 34 battles of the Arab–Byzantine wars →
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