IS, or ISIS to irritate the Oxford boys, are throwing everything into getting into Baghdad. Once there, diluted and hidden amongst the urban civilian population, Western air strikes will be impotent. The only way to shift them will be long, bloody and arduous urban street fighting of the sort the Septics experienced in Fallujah in 2004. Everything is to play for. Once in Baghdad, the spineless Shia politicos and generals will flee to their Swiss chalets with their stolen loot.
Everyone has a bit of the truth about Iraq. Yes, it's the battleground for a wider and longer lived Islamic civil war. Yes, it's a hotchpotch of conflicting tribal allegiances. Yes, it's about the oil. Even the much derided George Galloway spoke truth to fools in the Commons when he claimed that ISIS was if not supported at least not opposed by many Sunni extended families and settlements in the Iraq - Syria crescent.
Well, our army's utter failure in Basra at urban warfare - one of the army's ignominious defeats which unusually we don't celebrate - means that we're unlikely to be much use in helping shift ISIS from Baghdad if they get established there. Nothing wrong with our troops, you understand, but incompetent command, as is usual with the UK.