> we seem to have lost our moral qualms about bombing
    > civilians some time ago

First UAVs (balloons, as it happens) used by the Austrians to bomb Venice in 1849. Just think how the Europeans, who've been living with that reality for ~150 years now feel. Unconstrained civilian massacre by aerial bombing had peaked in terms of shakey moral justification (Dresden?) even before the Americans dropped The Bomb and won the numbers game.