EXCLUSIVE: John Goodman is negotiations to join the political thriller “Argo,” which Ben Affleck is directing for Warner Bros.

Alan Arkin has already joined the cast with Chris Terrio adapting Joshuah Bearman’s April 2007 Wired magazine article “How the CIA Used a Fake Sci-Fi Flick to Rescue American from Tehran.” The story told how the CIA and the Canadian government teamed to rescue six U.S. diplomats who’d been taken hostage at the American embassy by a group of Iranians in 1979.

The CIA’s ruse involved the explanation that the captives were actually a Hollywood film crew scouting a movie titled “Argo,” and using those fake identities, they were able to flee the country. Goodman would play John Chambers, the Oscar-winning “Planet of the Apes” makeup artist called in to help sell the ruse.

George Clooney and Grant Heslov are producing Warner Bros.’ political drama through their Smokehouse banner along with David Klawans.

Goodman has been busy as of late, starring in Kevin Smith’s horror pic “Red State.” He’s also currently shooting “Extremely Loud and Incredibly Close” for Warner Bros.

He is repped by Gersh.