But more important is the mission:
You can't accomplish the mission if you lose the people.NATO and Afghan military officials say killing militants is not the goal of a 3-day-old attack to take control of this Taliban stronghold in southern Afghanistan. More important is to win public support.
However, if a fighter puts down a weapon and walks away, this has not caused more casualties. If you see one plant a bomb, that bomb isn't likely to kill anyone, so not shooting them doesn't cause more casualties. Nothing I can see about the rules leads directly to more casualties, so while making things more difficult may be true, or not, it has to be seen in the context of the mission.