The US government has long maintained, reasonably enough, that a defining tactic of terrorism is to launch a follow-up attack aimed at those who go to the scene of the original attack to rescue the wounded and remove the dead. Morally, such methods have also been widely condemned by the west as a hallmark of savagery. Yet, as was demonstrated yet again this weekend in Pakistan, this has become one of the favorite tactics of the very same US government.

A 2004 official alert from the FBI warned that “terrorists may use secondary explosive devices to kill and injure emergency personnel responding to an initial attack”; the bulletin advised that such terror devices “are generally detonated less than one hour after initial attack, targeting first responders as well as the general population”.