Why doesn’t Perle stop his bellyaching and SUE THE JERK for false statement or libel or whatever the technical term is? No one is going to care if he writes a million editorials about it.
With "normal" people, truth can be a defense against libel, the written form of defamation. With "public figures", which Perle is, the bar is much, much higher for some one attempting to recover for libel (or lower for a defendant attempting to avoid liability). This is the result of a landmark US Supreme Court case on libel involving, wait for it, the NY Times.
Bottom line, Perle apparently isn't willing to pay the legal fees for a loser case just to make a statement. So, instead, he pens columns.