The head of the arrest mission, Roy Miller, and his team of inspectors are performing a mission that seems very dangerous under very difficult circumstances. The task of the team led by Miller was in 2003 to find Iraq's stockpiles of weapons of mass destruction, which is the most difficult issue amid a powerful war. Soon, the discovery of the secret secret intelligence will cause Roy to go to corruption and rogue very dramatically.
"Green Zone" simply offers up a fun, entertaining ride that has you on the edge of your seat throughout most of the film. If you are into the politics though, you may just find it a little more interesting.
It's one thing for the filmmakers to (sort of) fictionalize real people, but Green Zone wraps up with a wish-fulfillment fantasy that is about as believable as watching reinforcements riding in to save Custer.