Maple01
If he feels so strongly he can do his tour then leave.
If he feels so strongly, completing another tour in Iraq defeats the purpose. Part of his case is surely to make a point, as much as anything else.
If he does not wish to be part of a political policy then he can't be expected to contribute towards it, then make a meaningless resignation.
Climebear,
That is a very cynical way of washing our hands of this issue.
I act in my own interests in acting ethically towards others, trying to take a low impact on my physical environment in general.
Someone else acting in their own interests does none of the above.
Merely claiming we act in our own interests is therefore utterly insufficient. My interests are based on an intention to be altruistic even when the gain will be negligible. Others acting in their own interest seek merely to maximise personal gain at the expense of others.
Many countries operate in the same way. Just because ours doesn't doesn't mean all don't.
teeteringhead,
There is a flaw with that argument: by not going, will he cease to be saving peoples lives? I doubt that.