Command Authority sees the return of Tom Clancy's greatest hero, Jack Ryan. There's a new strong man in Russia, but his rise to power is based on a dark secret hidden decades in the past. The clue to the mystery lies with a most unexpected source: President Jack Ryan. Tom Clancy's Command Authority is a brand new full-throttle all-action adventure for 2013. It follows Threat Vector and Locked On as the newest Jack Ryan novel. Praise for Tom Clancy: There's hardly another thriller writer alive who can fuel an adrenaline surge the way Clancy can. (Daily Mail). Exhilarating. No other novelist is giving so full a picture of modern conflict. (Sunday Times). Thirty years ago, Tom Clancy was a Maryland insurance broker with a passion for naval history, who had always dreamed of writing a novel. His first effort, The Hunt for Red October, catapulted onto the New York Times bestseller list after President Reagan pronounced it 'the perfect yarn'. Since then Clancy has established himself as an undisputed master at blending exceptional realism and authenticity, intricate plotting and razor-sharp suspense. Mark Greaney has a degree in international relations and political science and is pursuing his master's in intelligence studies with a concentration in criminal intelligence. He is the author of The Gray Man, On Target, and Ballistic.