David O. Russell directed the following films, "Three Kings" (1999), a satirical black comedy war film, "Silver Linings Playbook" (2012), an American romantic comedy-drama film, and "American Hustle" (2013), an American black comedy crime film. Russell did not direct or have any kind of involvement in the production of the 2014 biographical war drama film "American Sniper".

"American Sniper" was directed by Clint Eastwood and written by Jason Hall. It is a movie that is loosely based on the memoir "American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History" (2012) by Chris Kyle, with Scott McEwen and Jim DeFelice. The film was produced by Eastwood, Robert Lorenz, Andrew Lazar, Bradley Cooper, and Peter Morgan. Cooper stars as Kyle and Sienna Miller is his wife Taya, with Luke Grimes, Jake McDorman, Cory Hardrict, Kevin Lacz, Navid Negahban, and Keir O'Donnell in supporting roles.

The film, in great detail, follows the life of Kyle; he became the deadliest marksman in U.S. military history with 255 kills from four tours in the Iraq War, 160 of which were officially confirmed by the U.S. Department of Defense. While Kyle was celebrated for his military successes, his tours of duty took a heavy toll on his personal and family life.

"American Sniper" received many positive reviews for Cooper's lead performance and Eastwood's direction. It also attracted some controversy over its portrayal of both the War in Iraq and Chris Kyle.

More Info: en.wikipedia.org