You both agree. What keeps someone from killing you on a bus is a combination of norms, morals and deterrence. The same apply to drone murder. Norms and morals

You both agree. What keeps someone from killing you on a bus is a combination of norms, morals and deterrence. The same apply to drone murder. Norms and morals apply almost equally to murder by drone versus e.g. poisoning someone. The difference is largely in deterrence, i.e. having a clearly-communicated capability to find anyone who tries to pull this off.