This is, to say the least, highly unusual. From the White House:

POTUS to address the nation tonight at 10:30 PM Eastern Time

Now, I have no idea what this is about yet and, somewhat eerily, neither does Marc Ambinder, who almost always has scary good sources for this kind of stuff:

I assume the WH will give the wire services a heads up, so we’ll known by 10:25??

CNN has just announced that it is “national security related”.

Stay tuned and we will update here as it comes down.

UPDATES: It is reportedly NOT Libya. Rumor is Bin Laden.

BIN LADEN REPORTEDLY DEAD AND US HAS BODY

From CBS News:

House Intelligence committee aide confirms that Osama Bin Laden is dead. U.S. has the body.

Rumsfeld (of all people) has also said the same.

So, it is quite clear that Bin Laden is the deal and he is confirmed dead. Does that mean the was is over? Can we close Gitmo? Is the AUMF now completed and done? Well, of course not. The long war is NEVER over. This will only be an excuse to go to a higher and more scary DEFCON because of alleged feared reprisals.

From Laura Rozen:

Heard WTOP radio reports suggesting helicopter crash in pakistan and UBL (body or alive?) handed to US forces in Afghanistan