A brief history of the crisis in Iraq - a card file from Vox.com. Good visuals, maps.
Like maps? Another presentation from Vox.com shows how the conflict in Iraq has come about in 27 maps. If you want the bottom line (my opinion), go straight to map #27 showing how the Iraqis are sorting themselves out into geographic regions reflecting ethnic/religious distributions. The Kurds already have an autonomous state, and the Sunnis and Shia are sorting out the rest.
This might be "The End of Iraq" (Times magazine, June 30), but the clinker is ISIS/ISIL. Can any of the players, in or out of Iraq, mid-east or the larger powers, tolerate a radical islamic state?