 He fortified the Mountain against his new rivals and sent to his cousin Dáin Ironfoot for reinforcements.Thorin was furious when he discovered that Bilbo had stolen the Arkenstone to use as a bargaining counter, and sent him from the Mountain.Conflict amongst the Dwarves, men, and elves was averted only by an invasion of goblins and wargs, whereupon the Dwarves joined forces with the wood-elves, the men of Lake-town, and the great eagles in the Battle of Five Armies.