It seems highly probable that M'Rek was the Klingon chancellor played by Dan Desmond who appeared in ENT: "The Expanse" and gave Duras his chance for redemption. It may also be possible, given their very similar cranial ridges and general appearance, that the Chancellor seen in the episode "Broken Bow", is intended to be the same Chancellor mentioned here and played by different actors in the two episodes.
I've added a new background note, removing the speculation and just retaining the (imo) relevant point that this might very well be the same chancelor seen in the expanse. While I'm all for removing unnecessary speculation, this note might have done better with a drastic rewrite rather then complete removal. -- Capricorn 08:54, August 7, 2010 (UTC)