A coordinated and well-planned IS offensive that killed the Tuz Khurmatu police chief shook the relatively secure frontline town, setting off alleged extrajudicial killings of prisoners nearby and a violent end to a tentative ceasefire between Kurdish and Turkomen forces.

Despite losing territory and facing crippling air strikes, militants still control some wellheads in Salahaddin province and are sneaking crude to Mosul, and on to Syria.

After weeks of stagnation, new reinforcements and intensified air strikes help the Iraqi Army liberate Nasir village and gain the initiative on the Ninewa front.

Workers at the Kurdistan oil project, operated by Russia's Gazprom Neft, have been targeted with land mines twice in the past week.

Latest attack on oil infrastructure doesn’t affect oil operations, but demonstrates persistent security holes in critical crude-producing province.

An oil rig, abandoned in fall 2014 as IS militants neared, has been fully secured as Kurdish and coalition forces gain ground between Erbil and Mosul.

The latest in a string of asymmetric attacks around the capital, IS militants partially destroyed a propane filling station in Taji before Energy Police regained control.