Sorry to burst the bubble of all the conspiracy theorists, but the DSM is supposed to be the minutes of a meeting of high level British officials. If somebody just made it up, they would've officially denied it by now, instead of just saying no comment.
Liberals at CBS tried that argument with the forged military document debacle. "It has to be true since the Pentagon didn't deny it" was something they were quite fond of repeating over and over again.
Really? I seem to remember that the White House just ignored the 60 Minutes piece until Dan and CBS News were a crispy brown on the outside.
Somewhere there's a quote about not getting in the way when your enemy is committing suicide.