It shouldn't be anything to do with us - he's Iraq's prisoner, not the West's....
I agree that he should receive the stiffest punishment available to the people who have convicted him. The question of whether the death penalty should be used is not for us to decide though - whether we agree with it or not.
From the point of view of punishment, would it be worse from his point of view to be hanged following a brief period of 'reflection', or to be imprisoned to spend the remainder of his 'natural contemplating the error of his ways with Big Abdul and his tub of butter for company?
Whichever, from the point of view of everybody I agree that it would've been better if he had died a casualty in the invasion... Not at the hands of a foreigner however but at those of a Kurd....