The situation in Iraq looks like civil war, as is the case in Syria.
Civil War must be dreadful: you often have no clear idea who your enemy is. Unlike wars with a "real" external enemy (bad enough) civil wars must be even worse with nowhere to be safe from "the enemy" within. I feel so sorry for the people of any nation being torn apart by civil war.
One just has to imagine it taking place in the UK to realise how awful it must be.