I've known former CIA operations officer Art Keller for several years now as a reliable guide on counterterrorism issues related to Pakistan, Afghanistan and Iran, all of which he's had extensive experience with.
Thus we need to pay attention when he says attacking Iran would be "a huge mistake."
This week sees the publication of his first novel, Hollow Strength, a Tom Clancy-like thriller which posits a murderous rivalry inside Iran's military leadership, climaxing in the desperate defection of a Revolutionary Guards Navy officer to the CIA.
It seemed a timely moment to pose five questions for him on the current crisis.