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The Siege of Damascus (634) lasted from 21 August to 19 September 634 AD b[âº] before the city fell to the Rashidun Caliphate. Damascus was the first major city of the Byzantine (Roman) empire to fall in the Muslim conquest of Syria.
Then the king of Babylon's army besieged Jerusalem-The siege had commenced the year before, and continued a year after ending in the fifth month of the following year; consequently, the siege must have lasted about eighteen months and twenty-seven days. See 2 Kings 25:18.