Northern Syria fighting: Opposition forces say they have captured an air base

In Syria, President Bashar al Assad is facing what's being described as the biggest challenge to his rule in years. Opposition fighters in the north say they've taken control of one of the region's biggest airbases. That's after they advanced into the heart of the country's second city of Aleppo, earlier. They also claim to have captured a military base in Idlib province. Al Jazeera’s Hamdah Salhut reports. Subscribe to our channel: http://bit.ly/AJSubscribe Follow us on Twitter: https://twitter.com/AJEnglish Find us on Facebook: https://www.facebook.com/aljazeera Check our website: http://www.aljazeera.com/ Check out our Instagram page: https://www.instagram.com/aljazeeraenglish/ Download AJE Mobile App: https://aje.io/AJEMobile #Syria #BasharAlAssad #SyrianCivilWar #OppositionFighters #Idlib #Aleppo #AirbaseCapture #MiddleEast #AlJazeeraEnglish