Leonardo DiCaprio has no need to go out looking for big blockbuster type movies. He'd rather do movies that make a statement.  His new movie, Body of Lies, is about the CIA investigating a possible terrorist in the Middle East.  Leo says,

"I’ve never sought out those types of movies specifically. Certainly Blood Diamond
had a great political undertone and was very topical and pertinent to
issues that people are discussing worldwide. It happened to be
incorporated from that scenario. That happens with both of the films. I
never sort of thought that out."

In spite of that, Leo isn't trying to push his views on anyone.

"The thing we most tried to do in the creation of the film is not bring
any of our politics into play. You give an audience a
realistic, stark view, negative and positive, of the United States and
foreign relations worldwide. The film at its core deals with CIA and
espionage. It has a duality to it."

In the end, he says no single country comes across as better than any others.

"It’s villifying both ends of the spectrum. I don’t think we’re making
the United States or the Middle East heroic. It’s war. It’s
warfare. At the end of the day, it’s their decision."

Leo is established enough in Hollywood that he can take on pretty much any role he chooses too.  Besides, he could probably live off of the money from Titanic alone for the rest of his life!