The Economist tries to get it right. The center of Ramadi is indeed under ISIS control.
That's “ISIS” as an acronym for Islamic State Is Shxt.
What matters most in Iraq goes to three things:
— The Sunnis in Syria and in Iraq are now terrified of the ISIS fighters. This is a reversal of the situation on the ground a year ago. Rejection of their Wahhabi/Salafi message is running close to 100%
— Every Sunni tribe in Anbar Province now opposes ISIS publicly. After taking hundreds of murders from ISIS fighters all over the province, the earlier welcome the tribes put out has been replaced by what amounts to passive resistance.
— Mosul is surrounded. The section between Sinjar and the Baiji/Tikrit area on the western side of Mosul needs to be beefed up. Reinforcements were sent up out of Baiji on Tuesday. Even with light protection there, ISIS has made no effort to break out from Mosul. (Refer: the Battle of Stalingrad during WW II for a parallel decision.)
Syria is not that different: