Primary Sources:

Audio message from the Islamic State of Iraq’s Shaykh Abū Bakr al-Ḥussaynī al-Qurayshī al-Baghdādī: “Announcement of the Islamic State of Iraq and al-Shām”

Statement from Shaykh Abū Basīr al-Ṭarṭūsī: “On the Announcement of the Islamic State of Iraq and al-Shām”

Secondary Sources:

Jihadists warn: Syria-Iraq Al Qaeda unification reflects badly on us by Hassan Hassan