At least 17 civilians have been killed due to aerial bombardment on areas in Salqeen city in the northwestern Idlib Province, Syrian Observatory for Human rights (SOHR) reported on Thursday. The number of casualties is expected to rise because there are some people in critical situation. Syrian forces conducted large-scale operations throughout the province, taking full control of Tal Ghazal and Tal A'awar hilltops and the towns of Al Ziyadiya and Al Sararif in Idlib, Meanwhile, Syrian forces killed an unknown number of militants affiliated with the Al Qaeda-linked Nusra Front in Busra Al Sham city in the southwestern province of Dara'a. Syria has been gripped by crisis since March 2011. More than 220,000 people have been killed in the chaos, according to UN report.