So have you seen that movie?
So having established that immoral killings are taking place the only question left in this thread is whether such killings can legitimately be described as "murder".
Whilst in a legal technical sense the answer is probably "no" I would suggest that in more common parlance the term "murder" is probably quite apt.
I don't really have a problem with that. It kinda cheapens the word "murder" and it also means that a lot of western governments are also "guilty of murder". Its going to be something that every country that goes to war is "guilty" of. So I don't see the point in calling it that.
Why not just reiterate that war is really fucking ugly?
Throwing around emotive words like murder isn't my cup of tea. And it makes people sound like a bitch when they do.