Michael Winterbottom and Road To Guantanamo collaborator Mat Whitecross are working on documentary The Shock Doctrine.

The film is based on a book by Naomi Klein whichaims to expose what she calls 'disaster capitalism'. The theory is that neo-liberal capitalism feeds on natural disasters, warand terror to establish its dominance.

Klein herself willnarrate the film, as she did ashort film of the same name last year, directed by Alfonsoand JonasCuaron.

Winterbottom's film will again explore major events in history where theshockdoctrine seems to apply,focusing particularly on the dictatorships in Argentina and Chile in the 1970s.

'I have started shooting segments of the film already with Naomi Klein narrating(reprising her role from the short film),'Winterbottom told ScreenDaily.

Winterbottom is at the San Sebastian film festival to promote his latest film Genova, starring Colin Firth, whichscreened this morning in official selection.