Both sides in the battle for Aleppo committed war crimes, including Syrian government aircraft that “deliberately” bombed and strafed a humanitarian convoy, killing 14 aid workers and halting relief operations, U.N. investigators said on Wednesday. But investigators could not say whether both Syrian and Russian forces had used them in Aleppo or only one had. They also did not attribute any specific war crime investigated to Russian forces. The U.N. Commission of Inquiry’s report – released as Syrian peace talks continue in Geneva – covers the July-December period and is based on 291 interviews with victims and witnesses, as well as analysis of forensic evidence and satellite imagery. Opposition groups shelled government-controlled western Aleppo, killing and injuring dozens, the report said. They prevented civilians from fleeing eastern Aleppo, using them as “human shields”, and attacked the residential Kurdish district of Sheikh Maqsoud, both war crimes. The U.S.-led coalition did not conduct any offensive air missions over Aleppo in the second half of the year, they said.