HOW DO WE KNOW THAT THE NICK BERG MURDER VIDEO WAS A MISTAKE FOR AL QAEDA? Because Al Jazeera is now attacking its authenticity. (Yeah, it’s certainly unprecedented!) Who are these unnamed bloggers?

UPDATE: Jonah Goldberg has thoughts on the unfolding Berg story.

ANOTHER UPDATE: An amusing Al Jazeera parody here. And reader Edward Lee emails:

Did these people see the same video I saw? Berg is clearly alive when the terrorists shove him to the ground. The reason he doesn’t wriggle in resistance is because he’s completely tied up. They then proceed to saw off his neck, and you can hear him screaming for a good 5-10 seconds. When they hit the jugular, you can see a lot of blood spill out.

Yeah.