Motivation for the rush to murder Saddam

[TroglodyteScholar]

I heard a commentator on All Things Considered this afternoon, and he was saying Saddam's expedited execution is a crime against the Kurdish people (or the family and survivors, anyway). He continued on to say that a trial's only purpose isn't necessarily to assign guilt or innocence, but to establish on record exactly what happened. He mentioned that a trial for the gassing of the Kurds would likely reveal other individuals and countries that were complicit in that crime against humanity.

He was beating around the bush a bit, but is it possible that the USA is one of the countries he was referring to? Is it possible that the Dujail trial came first with the specific purpose of obscuring details surrounding the gassing of the Kurds?

Someone more knowledgeable than me...please chime in.