I can't help but think, regardless of who did this, that we just witnessed a watershed event.
I also tend to believe that to a certain extent, it doesn't matter who did it...much like Sarajevo in June of 1914, in Rawalpindi today, it feels like the genie is out of the bottle.
Do you really think that this has the same gravity as Sarajevo in 1914? I'm not against what you're saying, but there doesn't seem to be that whole "shot heard 'round the world" feel to this. Not here in the west anyway.
What would really get the west fully involved in this is the nuclear threat. Completely regardless of who eventually takes power, whether by election or not, the security of the nuclear weapons should be at the top of everybody's list.
There should be a MEU in the Indian Ocean very soon waiting to see what the populace, the government, Al Qaeda, and India intend to do. I'm sure there's already a sub there doing what it does.