|One other minor point...|
I believe that the appropriate venue for dealing with crimes against humanity is the UN
Sadly, not the position of the US, which has stood against the formation of an International Criminal Court and now will not participate unless US citizens are exempt.
Admittedly if I were Bush or Cheney, I'd be none too keen to see much investigation into wars of aggression (and started for imperial or corporate gain), which I think might qualify as war crime or at least criminal war...
As for French venal interests, whatever reasons underlay the French stance they were at least in the right <g>