I was sent to speak with Dori in Othrikar, to request that the Dwarves join the Council. However, when I arrived I was told by Hannar that Dori had been captured by the Dourhands. The dwarves in Othrikar could not contemplate joining the Council with Dori missing and so I agreed to try and rescue him.
I found Dori in the encampment of the Dourhands. We killed many Dourhands in our escape and even managed to retrieve a chest of gems (well truth be told, Dori is a typical stubborn dwarf and refused to leave until we had the gems – they are vital to Othrikar apparently – so I had no choice but to rescue Dori and his loot. He did, at least, ignore the mining nodes on our path unlike some other dwarves I could mention)
Hannar was extremely grateful and relieved to have Dori back in Othrikar. He said that he had mentioned the Council to Dori and I was very relieved to hear that the dwarves will indeed be lending their considerable might.