<p>Was best-selling author Tom Clancy pressured to drop his franchise character from his newest thriller because of ageism?</p>
<p>And is he writing his own books?</p>
<p>The answer to the first question, according to sources, is "yes." Jack Ryan is not the star of "The Teeth of the Tiger," which will be published next week by Putnam. Instead, the hero with the Teeth is John Ryan, Jack's dashing — and much younger — son, Jack Jr.</p>