Washington, Mar 12 : Brendan Gleeson has signed on to join Matt Damon, Greg Kinnear, Amy Ryan and Jason Isaacs in Paul Greengrass' untitled Green Zone thriller, for Universal and Working Title.
Written by Brian Helgeland, the film is based on the 2006 book 'Imperial Life in the Emerald City' by journalist Rajiv Chandrasekaran.
The film focuses on the dichotomy between the Green Zone, where troops are housed, and the streets of Baghdad after the overthrow of Saddam Hussein.
The movie posits that bureaucrats are making policy decisions about the country's rebuilding even though they're in a sheltered enclave without a clear view of all that is happening.
Gleeson, who starred in 'Beowulf' and 'Harry Potter and the Order of the Phoenix,' is playing the role of an American soldier in the film.
Production of the film is underway in Spain.