A study by Stanford and NYU claims only about 2 % of killed targets are ` ` high - risk '' Innocent civilians are killed , injured and traumatized by drone attacks , the study says . Drones in Pakistan killed two children from 2004 to 2006 , an independent group says . Pakistan has said a target must meet ` ` very tight and very strict standards ''
A study by Stanford and NYU claims only about 2 % of killed targets are `` high-level '' Innocent civilians are killed , maimed and traumatized by drone strikes , the report says . Drones in Pakistan killed 176 children from 2004 to 2012 , an independent group says . Obama has said a target must meet `` very tight and very strict standards ''