My guess? Thalmor.

Possibly. They had already taken Valenwood and may have been trying to promote chaos in Elsweyr. If so, they were doing a good job, though they don't appear to have gotten a faction to really sign on with them until after the Void Nights.

Dislike the Nords and I'm neutral. Well, sort of. I tend to side with the Empire, but I don't really take it as seriously as a lot of people here do.

Doesn't really matter who wins the CW anyways, since I'm pretty sure something'll happen to make the outcome moot.

Although there have been some Morrowind quests that were canonized...

Don't forget the theory that the Void Nights were really a eugenics experiment by the Thalmor to convert the Khajiit into Bosmer considering how some Khajiit look nearly similar to Bosmer if born on a certain moon cycle.

Do quote it.

I am a Nord, IRL (inherited genetics) and first time play through with my current character, so I'm NOT biased towards them.. no.. not at all!...

Don't care much for the civil war atm, too busy exploring the world and getting use to the unique quirks in this game after playing FPS for so long...

There have always been Khajiit that looked nearly identical to Bosmer. http://www.imperial-library.info/content/khajiit-physiology-phases-and-forms sub-species.