In the following months, reports of the use of chemical weapons by Syrian forces multiplied. The most serious was an allegation that the Syrian army had used sarin gas on Mar. 19, 2013 at Khan al Assal, north of Aleppo, and in a suburb of Damascus against its opponents. This was followed by two more allegations of small attacks in April.
When Ibrahim al-Badri al-Samarrai adopted the name of Abu-Bakr al-Baghdadi al-Husseini al-Quraishi and revealed himself to the world as the Amir al-Mu’minin (the Commander of the Faithful) Caliph Ibrahim of the self-proclaimed Islamic State, the whole world had to sit up and take notice of him.