Turkey said on May 31 that heavy air strikes reported to have been carried out by Russian jets on a hospital and a mosque in Syria's rebel-held city of Idlib had killed more than 60 civilians and injured around 200 people.
Reuters: Turkey says Russian air strikes in Syria’s Idlib killed 60
Syrian civil defence teams work on the rubble of a building in Idlib, in northwestern Syria, on Dec. 21, 2015 following reported Russian air strikes.