A source overseas makes a wild suggestion: Maybe Karl Rove & co. encouraged (or at least didn’t object to) slow vetting of the Clarke book in the hopes that it would come out snack-dab in post-primary season. The reasoning: People would be forced to hear the Clinton vs. Bush records, realize that Clarke is silly, realize that he is best friends with Kerry’s foreign-policy man, Rand Beers, and start to wonder about the whole Kerry operation.