mdd1:
Wrong. A goy does not have a neshomoh. Murder of a goy is not retzicha. It is not permitted for other reasons. Thus, in this irrelevant discussion, the one doing the killing may not be a rodef.
ujm:
See prior response. I am not justifying or permitting killing a goy. The halachos relevant to rodef might not apply.
CY:
See above responses.