Sandra Bullock has signed up to star in a new political comedy drama alongside George Clooney.

Variety also reports that David Gordon Green will direct the film, entitled Our Brand is Crisis, for Warner Bros.

The film will be based on the 2005 documentary of the same name, which follows the use of US political campaign strategies in South America.

George Clooney will executive produce with his Gravity co-star Bullock and Grant Heslov. Peter Straughan has written the screenplay.

Green's next film will be Manglehorn - starring Al Pacino and Holly Hunter - which premieres at this year's Toronto Film Festival.