ALEPPO, Syria — The Islamic State (IS), arguably the most dangerous and brutal terrorist group in modern history, now controls more than a third of Syria, according to the Syrian Observatory for Human Rights, a prominent opposition nongovernmental organization. The group’s stunning victories in Iraq have been repeated in Syria, though to a lesser extent and to even less media attention. IS now controls nearly all of the oil-rich eastern province of Deir ez-Zor, with regime forces controlling only a few pockets. Crucially, after ousting its rival, the al-Qaeda-affiliated Jabhat al-Nusra, from the provincial capital, IS is now face to face with regime forces, the two sitting opposite one another on the front lines that divide this largely devastated city.
The undeclared truce between the regime and IS seems to have run its course after both sides achieved all they could in their marriage of convenience. Nothing better illustrates this than the devastating assault launched by IS on the al-Shaer gas field in Homs on July 16 that may have left up to 300 regime troops and civilian employees dead. Meanwhile, the regime continues to launch airstrikes on IS headquarters and training camps in Raqqa, an indication that the gloves are now definitely off.