Gaghan shot in over 200 locations on four continents with 100 speaking parts. Syriana originally had five storylines, all of which were filmed. The fifth storyline, centering on Michelle Monaghan playing a Miss USA who becomes involved with a rich Arab oilman, was cut when the film became too complicated. Also, a role played by Greta Scacchi, as Bob Barnes' wife, was also cut before the final release. Parts of the film were shot in Lebanon, Dubai and other parts of the Middle East.
