I absolutely agree with you, whether the "enemy" shares your noble goals or defies them at every opportunity AND you or your children are there fighting under those rules.
If my children or I are fighting that enemy, I have clearly opposite ideas...
Well, I did a tour in Afghanistan (staff weenie - I turned 49 there), and my two oldest kids did tours in Iraq, and my son-in-law did 2 tours in Fallujah in the infantry...none of us believe in killing civilians in reprisals.