(1) We will not allow our soldiers to come to harm.
(2) It is unlikely to come to harm in the long run.
(3) Robot may injure a human being or through inaction allow a human to come to harm.
(4) A robot may not injure humanity, or, through inaction allow humanity to come to harm.
(5) A robot may not harm sentience or, through inaction allow sentience to come to harm.
(6) What would have happened to us if you had come to harm?