Fury of the Sunwell trailer Lore analysis

So you've had time to traipse around Sunwell Isle, you've read the new lore (both the official stuff and Alex's Know Your Lore: The Sunwell), watched the trailer, and all that good stuff, but you're still a bit confused. What does it all mean?

Let the lore geeks at WoW Insider help you out a bit. We've put together a scene by scene analysis of the lore behind the Fury of the Sunwell trailer, and we're presenting it to you here. Hopefully, it sheds some more light on this whole "Did Kael'thas go crazy or didn't he, and what is up with Kil'jaedan anyway?" thing.