Siege of Baghdad

The Siege of Baghdad is a siege where the Ilkhanate Mongols sacked Baghdadball which was the capital of  Abbasid Caliphateball. It is believed that this siege marked the end of the Islamic golden age.

Some say that Armenian Kingdom of Ciliciaball,  Kingdom of Georgiaball and  Principality of Antiochball helped the Mongols in sacking the city.