[onion2k]

Mosul dam in Iraq was in serious trouble and some argued that it might collapse after the second Iraq war. If it's ever breached the disaster could kill as many as 1.5 million people living in the city below and displace a further 5 million. It's not beyond the realms of possibility that a Stuxnet aimed at the dam's control systems could kill more people than at attack with nuclear or chemical weapons.