Very good LA Times Opinion piece on the drone killings:
Separate rules once existed for the battlefield and for normal times and places. Now a war zone can be anywhere, with drones the weapon of choice.
The war on terror's contribution to this unfortunate history has been the drone: an unmanned plane that can aim at and hit a target with enormous precision. And, as with earlier developments, we're getting used to it. The eye passes right over headlines buried inside the newspaper such as this one that ran in the New York Times on Dec. 28: "Yemen: Drone Strike Kills 2." Right now we have more or less a monopoly on drones, but that won't last any longer than our monopoly on nukes did.