 how do you fight and you do have a a three-tiered uh system to guide you and how you use combat force and that is military necessity the target has to be a military target number two uh unnecessary suffering you want to reduce collateral damage and then number three is proportionality in other words if i see that the enemy is in a particular building and they're surrounded by you know a lot of civilians i'm not going to use b-52s to level the entire town right i'm going to talk about building so there is proportionality