The film featured Jolie as a Russian sleeper cell agent with a mission to assassinate the U.S. president. The film was a success, grossing $293 million worldwide.
Originally, Kurt Wimmer was hired to write the script, but it is rumored that Jolie was thrilled with it, and didn't commit to the project.
Johnston has worked on films such as "The Prince of Tides" and "Seven Years in Tibet", which starred Jolie's fiance Brad Pitt.
Countdown to the release of Salt 2, with the iPhone Movie Countdown Clock App.
