The project went through a number of directorial changes. Originally the film was set with
Lasse Hallström but he left over scheduling conflicts. Then
Bharat Nalluri came on but left after the project had more difficulties. Then, when
Angelina Jolie came on, so did
Florian Henckel von Donnersmarck but he left over "creative differences", along with
Sam Worthington. Finally came
Alfonso Cuarón.
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