The boys here , aged 8 to 18 , were all militants at some point . Sabaoon attacks in Pakistan 's Swat Valley helped to de - stress local youth . U.N. Special Rapporteur : U.S. drone strikes here have created a new generation . Up to 3,500 people have been killed in Pakistan by U.S. drone strikes since 2004 . Between 18 % and 23 % of those killed were not civilians , according to one report .
Sabaoon attacks in Pakistan 's Swat Valley helped to de - stress local youth . U.N. Special Rapporteur : U.S. drone strikes here have created a new generation . Up to 3,500 people have been killed in Pakistan by U.S. drone strikes since 2004 . Between 18 % and 23 % of those killed were not civilians , according to one report .