This is interesting! I'll have to look into it more.

Seems like the root difference of "hostile (forces)" and "hostage" versus "enemy" or "enmity". This may be a distinction without a difference.

To "love" is not synonymous with becoming a doormat to the other. That would actually be the opposite because it enables and gives opportunity to gravely sin to those enemies. Instead, self-defense and just war ought not preclude Christian charity, even in war, for if one captures a hostile agent, opportunity to repent ought be given.