Power Play is a 1978 British-Canadian thriller film starring Peter O'Toole and David Hemmings, based on the non-fiction strategy book Coup d'État: A Practical Handbook by Edward N. Luttwak. A small group of military officers frustrated by the corruption of a fictional contemporary European government decide that they must overthrow the current administration. But the coup's leader worries that there is a spy in their group. The flag of the film's unnamed republic, "a generic country with no specific geography or culture" was green, yellow and black.