"Military expert P. W. Singer reveals how science fiction is fast becoming reality on the battlefield, changing not just how wars are fought, but also the politics, economics, laws, and ethics that surround war itself.
Moving humans off the battlefield makes wars easier to start, but more complex to fight. Replacing men with machines may save some lives, but will lower the morale and psychological barriers to killing. The “warrior ethos,” which has long defined soldiers’ identity, will erode, as will the laws of war that have governed military conflict for generations."