Anytime a terrorist attack occurs anywhere in the world, the same few lines are always repeated, which usually includes what country it took place in, how many people are dead, and occasionally, what they were doing at the time. Afterwards, you always get something to this effect:
"The Taleban have not claimed responsibility for the blast, but it bears all their hallmarks, says the BBC's Jon Brain in the Afghan capital."
Could someone please tell me what exactly this "hallmark" is that sets the Taliban apart from everyone else? Is it an explosion?