It doesn't matter how high up the ranks you've travelled, or how much you've achieved, you can always learn something from Batman.
In a recent interview with President Barack Obama (via The Atlantic), it is revealed that during White House strategy meetings with his advisors, President Obama would recall a scene in Christopher Nolan's The Dark Knight, in regards to Isis, and how that faction has grown.
“There’s a scene in the beginning in which the gang leaders of Gotham are meeting,” the president would say. “These are men who had the city divided up. They were thugs, but there was a kind of order. Everyone had his turf. And then the Joker comes in and lights the whole city on fire. isil is the Joker. It has the capacity to set the whole region on fire. That’s why we have to fight it.”
I would never have drawn that parallel, but it describes them and their approach just about perfectly.
You can read more of the interview here, which goes into tremendous depth with Obama about his presidency, and the decisions he's had to make during his time in office.