How come explosives, guns, grenades and munitions were delivered at this school unnoticed and in advance? How come a truck packed with heavily armed, masked, bearded militants could travel so easily through one of the most militarized regions in Russia crossing all checkpoints and descend at the school? It's inconceivable.

The antiterrorist operation was poorly coordinated, and the question remains open whether many of the deaths were caused by Russian forces' use of indiscriminate weapons such as tank cannons and flame-throwers.

Children were killed by the friendly fire.