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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.
During the Syrian Civil War which began in 2011 UNESCO voiced concerns that the conflict might lead to the damage of important cultural sites such as Krak des Chevaliers. It has been reported that the castle was shelled in August 2012 by the Syrian Arab Army, and the Crusader chapel has been damaged.rak des Chevaliers can be classified both as a spur castle, due to its site, and after the 13th-century expansion a fully developed concentric castle. It was similar in size and layout to Vadum Jacob, a Crusader castle built in the late 1170s. Margat has also been cited as Krak des Chevaliers' sister castle.