The 'Army of Islam' (Jaysh al-Islam) has formed in Syria. It's an amalgamation of 43 Islamist groups to be headed by Sheikh Muhammad Zahran ibn Abdallah Alloush.
Apparently, al-Qaeda affiliate Jabhat al-Nusra, Ahrar al-Sham (Free Men of the Levant), and others of the same ilk did not join.
This does not bode well for Syria.
A snippet from the official announcement/ceremony where the 43 groups are named, along with a call for others to join forces.