According to Agence France-Presse, ISIS and a number of moderate and hard-line rebel groups have agreed not to fight each other so that they can focus on taking down the regime of Syrian President Bashar Assad. Other sources say the signatories include a major U.S. ally linked to the Free Syrian Army.
The deal between ISIS and the moderate Syrian groups casts doubt over President Barack Obama's freshly announced strategy to arm and train the groups against ISIS.
The AFP report cited information from the Syrian Observatory for Human Rights, a U.K.-based group monitoring the Syrian civil war, which said parties to the agreement "promise not to attack each other because they consider the principal enemy to be the Nussayri regime." The term Nussayri refers to the Alawite ethnic group that Assad and many of his supporters belong to. AFP said the agreement was signed in a suburb of the Syrian capital, where ISIS has a strong presence.