Central Command says 27 strikes in Iraq and 28 in Syria since FridayState and Defense appear to differ on creating border buffer zoneInside Raqqa, the Islamic State capitalThe US has led 55 air strikes against Islamic State (Isis) militants in Iraq and Syria since Friday, according to Central Command. In a statement on Monday, Centcom said there were 27 air strikes against Isis in Syria and 28 strikes in Iraq, hitting a wide variety of targets including Isis buildings, vehicles, tanks and fighting units.