Sources said on Thursday that ISIL's foreign commanders... have been transferred to Mosul. ...ISIL is transferring its heavy weapons and equipment from Raqqa to Deir Ezzur, while preventing Raqqa residents from leaving the region. ..."ISIL has been transferring a large number of its forces and their heavy military equipment to the energy-rich regions in the Eastern Syria, mainly in Deir Ezzur and Eastern Homs, to save its revenues from smuggling of oil and gas," sources said,