Air power can deliver much, but it cannot deliver everything. This is as true of drones as it is of B-52s. The drones make more political sense at home than military sense abroad. Whatever the accuracy of the missiles, targets must still be identified before they are destroyed, requiring good local information. Where the local state is weak or nonexistent, as in Yemen, Somalia, Libya or Waziristan in north-west Pakistan, this is easy to do because the CIA can have its own network of agents or co-operate with local intelligence agencies.