Just read it - I still can't see where Richard says anything at all that could be summarised as his assuming that "only one person is guilty of the charges" of being a war criminal.

A war crime tribunal focussing on the crimes of Saddam's regime would be an excellent idea, and those brought before it should include those Western politicians who appear to have colluded in them over the years, and who encouraged him and assisted him in his aggression against Iran, for example.