Syria and Iraq have taken control of Islamic State terror group's two strongholds in their countries. <br/><br/>Syria's army announced yesterday that it has taken Deir al-Zour. Later in the day, Iraqi Prime Minister Haider al-Abadi said, al-Qaim, across the border, had been recaptured by government forces. <br/><br/>Iraqi forces said, they have also seized the last border post between Iraq and Syria that was held by the terror group.<br/>Last month, a US-backed Syrian alliance took control of Raqqa in Syria, the former capital of Islamic State's self-styled caliphate.<br/><br/>In July, Mosul – Iraq's second-largest city – was taken from IS after months of fighting.