Thank you, William.
The Solistarim do not control the City of the Gods. Their forays into it have met with repeated disaster.
However, the Solistarim do claim the alliegance of the nation of Blackmoor and the surrounding marches, along with all the land down to the Burneal Forest. This claim is loose and has not been enforced, but it is there nonetheless.
The Solistarim are a bunch of lawful evil peoples. They are totally unreasonable, devoid of compassion, and grant life no value as we would think of value.
The Solistarim are a dictatorship-magocracy under their High Leader. Mages, even powerful mages, are commonplace, and run almost every part of the government apparatus. These mages observe a strict code of service and duty, and all look upon the High Leader as the One and True God. All the other Solistarim either look upon the mages as semi-divine or divine messengers of the High Leader, or at the least they are scared witless by them. The unbreakable unity of these mages, their unswearing and usually fanatical loyalty to the High Leader, and their absolute tyranny over everyone else, is what has allowed all these disparate and violent races to coexist.
Indeed, the Solistarim are cosmopolitan. Members of all the Solistari races freely mingle in their great fortress cities in the Godspires, in their Underdark cities, in the undersea cities, and in the swamp cities. Individual attitudes, cultures, and preferences have been crushed under the heel of a omnipresent culture of service, loyalty, and tireless effort for the society.
That is to say, for the average Solistari, the attitude is as follows: you exist to serve and advancing the Nation. You're life is dedicated to serving and advancing the Nation. The greatest accomplishment in life is serving and advancing the Nation. The highest of all ethics and morality is service to, and advancement of, the Nation.
Families enforce this discipline upon their children immediately upon toddlerhood. Somewhere between the age of 3 and 7, children male and female are taken for training (as in Sparta) in what the Solistarim determine them to be the most qualified for: mage, cleric, fighter, etc.
Afterwards, in their teens typically (equivalent) the men and women of the Solistarim are put to work in the armed forces, and after many tours of duty may be released for more domestic duties. At this point, they can advance within the society, and those who achieve the most are often rewarded with great honor, nobility, ranks and title. Some can even aspire to join the ranks of the semi-divine minions of the High Leader. And go on to divine ascension and become his divine servants! (Yes, it's a crock, but the Solistarim do not know this.)
There is a remnant of local culture in each racial group that has not been crushed under the heel of conformity, but it is limited. The law is absolute, covers almost every aspect of life, and is enforced rigorously.
There is zero tolerance for lawbreaking. Minor lawbreaking invokes severe punishment and brainwashing in a reform center. Major lawbreakers are killed. Traitors (which covers a broad spectrum of offenses) are made grisly examples of, while the majority of the Solistarim revel, seeing in these traitors all that they hate and despise, moral and ethical bankruptsy.
This is the case for the flannae humans, dark dwarves, dark gnomes, and kobolds, the founding races of the Solistarim. The illithid have their own form of communal tyranny, but the High Leader long ago subverted the Elder Brain and with it the communal awareness of the illithid: they now tow the Solistari line.
The dragons are held in awe by the average Solistari, and the dragons live by a slightly different set of rules: they have greater freedom. Nonetheless, they are loyal to the High Leader and his agents, and they are loyal to those they have bonded with.
The lizard men, sahuagin, and giants were induced to become allies of the Solistarim, and afterwards Solistari culture slowly poisoned it's way into their lives, until they were copying the Solistari way in most respects. From there, it was a short hop for the High Leader to fully integrate them into mainstream Solistari society.
The beholders and aboleth are all charmed (and watched closely.) They adhere to the Solistari tenets due to magical compulsion.
The undead, of course, do as they are told. The lich lords who command them have their own pact with the High Leader. Undead under the control of other Solistari wizards are fanatical loyalists like their masters and mistresses.
The fire elementals, salamanders, and efreet are NOT a part of mainstream Solistari society, and generally keep apart. After all, their homes are places most Solistari could not survive in for long anyways. However, these races respect the High Leader and his minions (due to long and forceful diplomacy) and are reliable allies.
The Gith mercenaries are semi-independent. They are tolerated in Solistari cities because of their perceived use. The Gith themselves look upon the Solistari as rather insane employers, but since the pay is good and the potential for pillage very great they don't complain. And Gith society is itself highly militant and disciplined.
The neogi are barely tolerated, and the ill will is returned in full. These beings can never really be a true part of any society, being worse (if possible) than the illithid about supremacy. However, they fear and respect the High Leader, he pays them fantastically well (not to mention he has secretly charmed most of them), and the potential for pillage and plunder is immense, so they work for him. And they do make for excellent spies, scouts, and special forces.
The devils work with the High Leader and his mages, and are held in fear and awe by the populace in general. They alone are exempt from the rules, while mingling freely in Solistari society. However, the devils seem to respect Solistari laws, if for no other reason than it advances their agenda.
- - -
The Solistarim aren't so much about racial hatred, William, as they are about their secure knowledge that the Flanaess is their backyard, but a bunch of squatters and loiterers are sitting on their property, and these worthless bums and rabble refused to leave when politely asked to do so.
Since the rabble and the bums refused to move, they will just have to be dealt with in a more appropriate manner, and afterwards the mess they have made out of the Solistari backyard will be cleaned up, the land doled out to the rightful owners, and everything will then be roses and peaches.
If that means killing the bums and the rabble, then so be it. If the idiots won't be moved by reason, then they will have to be buried 6 feet under, and the world will be a better place for this.
The Solistarim point the finger particularly at Iuz. Here is a demon who is running amok and wrecking the yard, with his pathetic humanoid slaves and hordes of conjured demons (and by what right does he conjure demons into Greyspace, anyways?)
The Solistarim point out that nobody has tried to deal with this demon idiot: they were all too busy fighting each other, or plotting with said demon, to do anything about him.
The Solistarim also point the finger at the Oeridians. They can't run a kingdom (Aerdi), they can't impose order (witness the chaos of the Greyhawk Wars), they can't run an economy, and in the end they destroyed their own capital city and other major centers of population! (witness Rauxes, other cities, and the whole realm of Medegia.)
The Solistarim take a dim view of elves. The elves think they rule the world, apparently, and the whole of the Flanaess should belong to them, and the humans be their slaves (witness the Lendore purging.) They are too good for everyone else, refusing to cooperate with others even when it means the destruction of their own nations (witness the near destruction of neutral Celene at the hands of Turrosh Mak.)
And of course, their insane Underdark brethren, the dark elves, are worse. They worship an insane Goddess, are insane themselves, and plan to bring their insanity and disorder to the whole of the surface world and even out into Greyspace. Speaking of which, there is a bunch of those lunatic surface elves up there in Greyspace, with a fleet of spelljamming warships, menacing the whole planet of Oerth, and that has to be stopped too.
Perhaps Greyspace would be better off without elves?
The Solistarim are very unreasonable and hateful people. Obviously.
The Solistarim think of themselves as completely reasonable, ethical, moral, loyal, hard working, long suffering beings of reason and rational thought in a completely irrational and hostile world.
- - -
I'm not attempting to claim a Good Power, such as the Kevellond League, for the good reason that everyone is claiming Evil powers, and Evil seems to be the dominant force in play.
And it's sorta hard to negotiate or reason with the evil guys, when you're a good guy and all you want is to hold what you have, keep peace and quiet, and ensure the safety of your people ... and all these maniacs are ready to descend on you from every side!
Consider the Kevellond League. It is threatened from the north by Iuz (and by the Solistarim if Serpenteye allows them into the IR), on the west by Ket and the other Baklunish, on the west and southwest by the drow, giants, and other horrors of the Crystalmists, on the south by the Scarlet Brotherhood, on the southeast by the Pomarj, and even in the east it's neighbor Greyhawk is an aggressive and militant power. Of course, it is also threatened from below (from the Underdark), from above (from Wildspace), and from other planes (incursions from the Astral, for instance.) And even within or near it's own borders, things like the Temple of Elemental Evil have happened.
Anyone trying to run the Kevellond League is in for a difficult time!
As for the Iron League, ad infinium. They have Ahlissa to the north and northeast, the Scarlet Brotherhood threatening all their coasts, possible threats from Below and Above, and there is just a chance Ivid will break out of his prison in Rauxes and attempt revenge (on them, and everyone else he deems traitors to the Great Kingdom, which means just about everyone in the Flanaess.)
And Acererak is too close for comfort, over there in the Great Swamp. (Let's just say, I wouldn't want to be living in Sunndi on Acererak's doorstep ...)
Beset, and bankrupt, Nyrond is threatened to the northwest by Iuz, to the north by the Fists, to the northeast by the Theocracy of the Pale, on the east-northeast by the Bone March, on the east by North Aerdi (North Province), on the southeast by Almor (or rather, what Almor became), on the south by Ahlissa, on all it's coastlines by the Scarlet Brotherhood, from Above and Below, and by numerous enemies within - including a large number of formerly loyal barons who want to succeed from the country and create their own small kingdoms, and get away from the high taxation and enfeebled rule.
Not to mention, once more, that if Ivid the Mad breaks out of his imprisonment in Rauxes, Nyrond is just about at the top of his Blacklist of Places to Annihilate. (Heh, talk about a challenge to play!)
Speaking of which, nobody has claimed Ivid and Rauxes. Now, they could, and that would be an interesting challenge ...