Win or lose Tikrit, Isis can only be defeated in Iraq by the Sunni

The battle for the Iraqi city is the first serious attempt to dislodge Islamic State from a stronghold The military offensive against Isis forces in Tikrit, Iraq, is shaping up to be one of the most decisive moments in the profound struggle unfolding across the region. On Saturday no less a figure than General Martin Dempsey, chairman of the US joint chiefs of staff and so America's top officer, declared that the combined force of Iranian-backed militias and Iraqi government troops was likely to...