Okay, so a lot of timelines on this site seem to have a rough equivalent to the September 13th attacks on the World Trade Center, the Pentagon, and the White House being carried out by Islamic Terrorists from abroad instead of Neo-Nazis from within the United States.
I did some research on this, and apparently Afghani Dictator Osama bin Laden actually had plans for some remarkably similar attacks by pure coincidence, but scrapped them for whatever reason.
Now, most of the "Islamic 9/13" timelines diverge a lot farther back than just Osama deciding to actually commit an attack similar to 9/13. (Imperium Americanum* for example, is striking in that it diverges from OTL in the 1700s), so this WI simply asks "what if the TL remains pretty much the same as OTL (with a few minor but necessary changes) until 9/13 is carried out by Islamic Terrorists instead of Neo-Nazis?"
*OOC: I made that TL up out of thin air. I have no idea what it's about. Feel free to fill that in as we go on.