Depends on what you mean as "verification". Personally, I doubt at this point the intelligence services are going to "play games" with a topic like this, given the noted failures they have produced, given Tenets resignation.
We are better served, in my opinion, by thinking bin Laden is alive, til we have his head on a platter.
the war is won or is obviously to all a necessarily much larger war than just arresting OBL. The intelligence agencies aren't really saying anything about these tapes. They just mumble that it could be and it's awfully hard to tell, and let other people make the necessary news assumptions. The dude is cold.
If I thought my saying it would make Senator Kennedy believe it I would shut my mouth.
So long as our guys don't anounce that he is dead (and they can't truly know that unless they have, indeed, found the DNA) then Teddy can't say hey he's dead the war is over we have to bring the troops home from Iraq.