Dalaran has been one of the most prominent nations in the Eastern Kingdoms since its founding, though it's actually quite small. A nation only thousands strong at its height has perhaps held more sway over world leaders in its time than any other nation, and has attracted the ire of some of the most powerful entities Azeroth has ever seen.
Dalaran, located in the heart of former Lordaeron territory, has been the center of Arcane knowledge since its creation, and could be considered the Humans' answer to Quel'Thalas, though the nation accepts Elves (and many others) in its ranks as well. Magic is Dalaran's lifeblood, and is even ruled through the strength and wisdom of its magi. Dalaran is a magocracy, a government ruled by a council of mages known as the Kirin Tor, elected by citizens of the nation. Their icon is the Violet Eye, with Violet being the motif used for the nation itself, and the color purple representing the Arcane as a whole in Warcraft (Arcane Missiles, Netherstorm).