The US has been using armed drones in the 'War on Terror' since the year 2001. Though they are used in targeted killing, civilian casualties cannot be prevented. This raises legal and ethical questions. A conceivable scenario: a truck approaches a village near the Pakistani-Afghan border.The US has been using armed drones in the 'War on Terror' since the year 2001. Though they are used in targeted killing, civilian casualties cannot be prevented. This raises legal and ethical questions. A conceivable scenario: a truck approaches a village near the Pakistani-Afghan border.