By ADAM NAGOURNEY Karl Rove says that Washington is a city of myths - and that the No. 1 myth these days is Mr. Rove. No, Mr. Rove declared in an interview late on Friday, he is not the brains behind an intellectually challenged president, or the most powerful political consigliere the White House has seen in 50 years, or the shrewdly diabolical power behind the scenes engineering elections, destroying opponents and bringing new meaning to the term hardball politics. "There needs to be a myth by which this town operates, and if you want to believe that, like, the...