What Does It Take to Get An Oscar for Best Foreign Film?

What does it take to get a US academy award for the best foreign film? There are a variety of films that get the award, but there does seem to be a fairly easy way to increase a film's chances.

Pick a horrific conflict-ridden zone as a setting for the film. Countries where inhuman massacres take place, especially on a large scale, are a good candidate. Nazism also resonates with the academy. Next, make sure there is a large number of explicitly violent scenes highlighting the helplessness of the victims. The more disturbing the scene, the better. Throw in some young children witnessing the violence for good measure.