It's like someone was told the actual story while in the early stages of an epic bender and then fourteen whiskey shots in he decided to scribble down what little he remembers on napkins with crayon.
Waking up the following morning with a hangover like the spawn of satan and with a pocket full of smeared napkins he writes the script for this movie and actually manages to get someone to fund it.
But still, regardless of how far from actual events this actually is it is surprisingly bad with actors like Hawke, Strong and Rapace really delivering sub-par performances and regarding casting it's hard to imagine a worse choice as Olof Palme than Shanti Roney.
If you're interested in what actually happened, read a book and if you're looking for a heist movie you'll be hard pressed to find a worse choice than this.