Force Reconnaissance Marine and a British SAS commando, and are set in various locales, such as the United Kingdom, the Middle East, Azerbaijan, Russia, and Ukraine. The conflicts are seen from the perspectives of a U.S. The story takes place in the year 2011, where a radical leader has executed the president of an unnamed country in the Middle East, and an ultranationalist movement ignites a civil war in Russia. Developed for over two years, the game uses a proprietary game engine. The fourth main installment in the Call of Duty series the game breaks away from the World War II setting of previous entries in the series and is instead set in modern times. Call of Duty 4: Modern Warfare is a 2007 first-person shooter developed by Infinity Ward and published by Activision.