War isn't black and white, neither is choosing military targets. For instance, no one seems to have a problem hitting an oil refinery to starve the nation of that precious resource, yet hit a steel mill and watch the UN scream foul. Hit a plant that makes bombers, no problem, but hit Parris Island, where they make Marines, and everyone is in an uproar.
If I were in charge during a time of war, I'd say "If the target directly contributes to the front line or is exclusive to the enemy's offensive and defensive capabilities, then it is a valid target." So, weapons hidden in houses, take out the house. Bomber plant, bomb it. But I think hitting a house that is the home to someone who happens to be in power is unacceptable. That should have to be done with a surgical strike to avoid killing his or her family and friends. I don't agree with killing or even prosecuting someone based on guilt by association (i.e. Saddam's limo driver, manacurist, personal fluffer, etc.). I also don't agree with taking out oil refineries as that hurts the civilians working there, and the civilians trying to live out their everyday lives, but we (America and her allies) have been known to do it.