This is coolbert:
ISIL now entrenched, consolidation of gains established. Iraqi National Army efforts to retake lost territory for naught, ineffectual.
"Iraqi army retreats from Tikrit after assault stalls"
"Iraqi forces have withdrawn from the militant-held city of Tikrit after their new offensive met heavy resistance, in a blow to the government effort to push back Sunni insurgents controlling large parts of the country."
"The failure highlights the difficulties of Baghdad's struggle to recapture territory from the insurgents who seized Mosul, Tikrit and other cities last month in a rapid offensive which threatens to fragment Iraq on ethnic and sectarian lines."
Tikrit of course the home town of the late Saddam. Hard-core Sunni territory and a whole lot of hate I might expect directed at the central government in Baghdad.
It can be suggested too that Iraq for SOME TIME has been fragmenting and is fragmented along "ethnic and sectarian lines".