This is all Glóin’s story. Let’s talk about dwarves!
Balin left to go to Moria, some thirty years ago, taking many dwarves with him. At first he did well, and sent messages back to the Lonely Mountain. However, those messages have since halted.
Instead, a message came from Mordor. A black rider arrived at the Lonely Mountain, seeking the dwarves’ friendship and any information they had about the hobbit who had once been in their company. King Dáin refused to give any information about Bibo, and opted to wait it out. The rider returned several times, and has now threatened both the dwarven kingdom and the men of Dale. Glóin was sent to Rivendell to warn Bilbo and the others about this movement towards war.
Honestly, this is the most diplomatic move I’ve ever seen from Sauron. He sends a rider to ask for the dwarves’ friendship, and tells them essentially everything about Bilbo and the ring. He doesn’t say how important the ring is, merely calling it “the least of rings,” and “a trifle,” but everything else about it is pretty straightforward. He even offers a trade: friendship and information, and in return, access to Moria, and three of the ancient dwarven rings, of the Seven.
Sauron, a negotiator? And not too shabby…
In truth, the dwarves are suspicious, as they should be. They already feel that something bad has happened in Moria to Balin, so they don’t trust that Sauron could deliver on that promise.
And that makes sense as to why Glóin is at the Council of Elrond. Do we get everyone else’s stories? I don’t remember, but I hope so. At least, you know, the stories of the people we care about. I wouldn’t miss a beat if we skipped over the stories of Elrond’s counsellors. Will we ever even see them again? Doubtful.
But see, look! Backstory! It’s everywhere!
“‘Already war is gathering on his eastern borders. If we…'”