[HarryHirsch]

In 1925, JBS Haldane, the biochemist, wrote Callinicus, A Defence of Chemical Warfare: http://jbshaldane.org/books/1925-Callinicus/haldane-callinic...

He was involved in the Brtitish chemical weapons program. There are some interesting arguments in that little volume, which apply equally well to AI killerbots.