Arguably the availability of precision munitions changed the moral balance from "bomb a city into submission" into the modern sensibility of "only bomb specific targets of military importance."
And I'm beginning to seriously wonder if that works. Drop a bomb on a building containing a few 'terrorists' or similar. OK, they're dead. But their sons and nephews and cousins in the house next door are now pissed off and want vengeance, the neighbors are pissed off and scared and want random bombs to stop falling, etc. So you end up with a lot more people pissed off at you than you started with.
I mean, just look at Iraq and Afghanistan: are they at peace since precision missiles started dropping on their heads ? Nope. With no end in sight.
Look at Dresden, it was NOT nice, but there weren't any nazis OR supporters at the end of the night.