the day after davis' release, over 40 people were killed in the datta khel airstrike in north waziristan in the fata, in a drone strike by a us predator aircraft. the target appeared to be a compound operated by hafiz gul bahadur, a taliban leader. the dead included local tribal leaders. the strike, intended to further the local war effort, instead added to the unpopularity of drone strikes and added to the anti-american sentiment in pakistan. kayani conducted a rare press conference in which he condemned the drone strike (even persuading the pakistani government to summon american ambassador to pakistan, cameron munter, and lodge a "protest in the strongest possible terms") and labelled it "intolerable". in 2011, after delivering a long lecture at the national defence university, one staff officer reportedly got up and challenged his policy of co-operation with the united states. the officer asked, "if they don't trust us, how can we trust them?" according to one professor who was briefed on the session. general kayani essentially responded, "we can't."