assault on deir az zor. it ha been called a massacre as i.s.i.l. forces in the east push to the si. let's go to andrew simmonds, who has been monitoring from istanbul. who is the syrian government saying about the attacks? >> the syrian government is giving a different account of event compared with the syrian observatory for human rights which is another opposition observatory, monitoring group. the government is saying there was a massacre of 300 civilians. the so h.r. is saying that there was a major operation by i.s.i.l., and i.s.i.l. took 400 people, civilians mainly, and also families of regime forces and officers and soldiers. they have been kidnapped and taken west towards i.s.i.l. firmly held areas. what we are also hear is there was a devastating attack by i.s.i.l. involving suicide bombers, and we heard from a civilian in the city, an account whereby there was a public beheading of one of the soldiers in the area, a suburb in the north-west of the city. and also three other soldiers prop beheaded