A video believed to feature Pashtun school children in south-east Afghanistan recreating a terrorist attack has been posted on social networking sites. The 84-second clip appears to show a veiled boy bid farewell to his friends before approaching a group of children nearby and blowing himself up. Sand is tossed in the air to simulate the detonation as children fall to the ground. As the dust settles, their playmates gather round and pretend to identify the dead.