Re: Sons of Mogh... AWFUL ending
I actually thought Worf's attempt to rationalize the ritual was one of the better points, as it helped illustrate the conflict between cultures. You have a good point about whether or not he could have succeeded in carrying it out on DS9, but perhaps he felt there was no other option. And he didn't get off completely scot-free when he killed Duras. Picard gave him a formal reprimand on his Starfleet record because Worf was still one of his officers. The Klingons might have felt he acted appropriately, but I think both views have some validity.
"If you think you're brave enough to walk the path of honor, then follow me into the dragon's den."