Syriana is a 2005 American geopolitical thriller film written and directed by Stephen Gaghan, and executive produced by George Clooney, who also stars in the film with an ensemble cast. Gaghan's screenplay is loosely adapted from Robert Baer's memoir "See No Evil". The film also features an extensive supporting cast including Amanda Peet, Tim Blake Nelson, Alexander Siddig, Amr Waked and Academy Award winners Christopher Plummer, Chris Cooper, and William Hurt.