What is the film Red based on?

The film "Red," released in 2010, is based on the comic book series of the same name by Warren Ellis and Cully Hamner. It follows a retired black-ops CIA agent, Frank Moses, who is targeted for assassination and reunites with his former team to uncover the conspiracy behind the attempt on his life. The film blends action and comedy, showcasing the challenges of aging spies facing a new generation of threats. It explores themes of friendship, loyalty, and the unexpected adventures that come with retirement.