Turkey will allow up to one million Syrian refugees to pass through its territory to reach Europe ahead of a Russian-backed Syrian government offensive on the last rebel-held territory in the war-torn country."We have decided, effectively immediately, not to stop Syrian refugees from reaching Europe by land or sea," a Turkish official told Reuters. "All refugees, including Syrians, are now welcome to cross into the European Union."Footage of Syrian refugees boarding boats attempting to reach the islands of Greece was broadcast on CNN Turkey, while a reporter for Middle East Eye shared a picture of a bus placed by Greek authorities in front of its Pazarkule border crossing with Turkey, to prevent refugees from entering.Syria's offensive on Idlib province, targeting the last remnants of the rebellion including several Al-Qaeda groups, has forced one million people to flee their homes. International aid groups have struggled to provide food and shelter to refugees,