I have heard that even if a guest in your house has killed your borther, you can't, according to Afghan custom, raise your hand against him as long as his guest status applies. I have heard that this is not just a custom, but a powerful, and deeply ingained one. Such things are one reason you need to understand who you are dealing with. as it would have been better to take down David Koresh, or what ever his name was, when he was out jogging, it might be better to find out if there is aa way to remove that guest status business.