Robert W. Kagan FP: Robert Kagan, welcome to Frontpage Interview. Kagan: Thanks. I appreciate your inviting me. FP: I want to get your thought on the terror war and on the recent report made by the Iraq Study Group. But let's first talk about your new book. What motivated you to write it? Kagan: I suppose my interest in the history of American foreign policy began when I worked as a speechwriter for George Shultz in the Reagan years. Although many, especially the so-called "realists", dismissed Reagan as some kind of aberration from American foreign policy -- just as...