The Syrian government and Russia have intensified their bombing campaign in southern Deraa province. That is according to opposition media, which say air strikes escalated after talks with rebels about a ceasefire failed. More than 330,000 people have fled their homes since the offensive started more than two weeks ago. Al Jazeera's Bernard Smith reports from the Jaber Crossing on the Jordan-Syria border. Subscribe to our channel: http://aje.io/AJSubscribe Follow us on Twitter: / ajenglish Find us on Facebook: / aljazeera Check our website: https://www.aljazeera.com/