https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/33711/20110505JDN_211_UAS_v2U.pdf

JOINT DOCTRINE NOTE 2/11
THE UK APPROACH TO UNMANNED AIRCRAFT SYSTEMS
Joint Doctrine Note 2/11 (JDN 2/11), dated 30 March 2011,


MORAL AND ETHICAL ISSUES
516. Unmanned systems pose more than just legal dilemmas. The ethicsand
morals-related questions of when, where, and how automated or
autonomous unmanned systems may be used, have been tentatively explored
in academia (and in popular science fiction), but we are only now starting to
require real-world answers. Many of the dilemmas apply to the use of
unmanned systems in any environment, not just in the air. Beyond the
question of whether an action is legal there is now the concern of whether an
action is morally justified. Will the advent of increasing autonomy raise
complex dilemmas centred on the moral and ethical justification of our
actions? For instance, will future wars be fought remotely, at least initially, with
little or no loss of friendly human life? Is human nature such that the next
arms race will seek to pitch increasingly complex unmanned systems against
other unmanned systems or humans?