Two Washington insiders who have been strong supporters of the president and his war policy, Richard Perle and David Frum, are writing a book together that may answer some questions many people have now that we've taken Iraq: What's next in the "war on terror"? That's what they will discuss in the untitled book just signed by Random's Jonathan Karp, who hopes to publish at the beginning of next year. Karp bought North American rights in the combo from Jennifer Rudolph Walsh at William Morris. Perle is, of course, the hawkish foreign policy expert who recently quit as head of the influential Defense Policy Board over questions of his related business dealings; Frum, a former Bush speechwriter (he coined "axis of evil") is the author of the bestselling The Right Man.