When the police van drives the Ethiopian boy to the airport in England, they drive past an Air Transat jet. The scene takes place in 1984, while Air Transat made its inaugural flight on 14 November 1987.
A Khmer Rouge officer claims he only answers to god, when in fact the Khmer Rouge brutally surpressed everyone who did not abandon their religion. The Khmer Rouge believed in only one thing, and that was 'Angkar', the ruling body of the Khmer Rouge.
There are two scenes where helicopters are used: in Cambodia when 'Vietnamese' helicopters pass overhead and on the Chechnyan border. Both of these scenes were US-made Bell helicopters, the UH-1 Huey. It would be more factual to use Russian-made helicopters in these instances, particularly in Cambodia.