It is clear from Skyrim that at some point the Thalmor attacked the Empire itself, Stormcloaks aside.
In this we find references to "The Great War" and the White Gold Concordance, in which the worship of Talos is forbidden, perhaps to remove a rallying point...
In the prior game (Oblivion) there are High Elves, or "Altmer" as they are named. But no such thing as a huge war is mentioned - it was evidently yet to come.
I wonder now just how large a nation the Altmer may have behind them, where are they from? What is the nature of their power base? How many of them can there possibly be, and WHY above all was it necessary for the Empire to come to terms with them at all?
Can it be that somewhere in Tamriel there exists a large enough Altmer bastion that they can front an army large enough to rub the Empire itself out of existence? How can that be....
Several points come out in Skyrim that are beyond minor squabbling as to Stormcloaks -vs- the Empire. For one thing the Altmer (Thalmor) find it necessary to spy out their neighbors, and operate a fifth column among the natives of the Empire, and on the face of it I wonder what else is happening in the rest of the Imperial Provinces.
What we see in Skyrim is a backwater - what indeed may be going on in Cyrodiil at the time of Skyrim? The very heartlands of the Empire... To be sure, if such a thing as the White Gold Concordance has been shoved down the Empires throat wholesale - it must mean that the other provinces are in turmoil as well. What of Morrowind, and the rest?
To what extent and degree are the Thalmor investing themselves in what surely must be a bid to overtake all of Tamriel for their own purposes....
And who will resist it?
What can we do?
It would seem to be a world overrun by pointy eared sneak thieves...
I bet it would make for an incredible follow on game.