What geography tells us about the world's hotspots

U.S. soldier in Afghanistan
A U.S soldier stands guard in Ghazni city west of Kabul, in October 2007.
Photo by MOHAMMAD YAQUBI/AFP/Getty Images

Journalist Robert Kaplan suggests that the Obama adminstration would do well to focus on "shatter zones" in the world.

These are places where conflict has historically raged, like Pakistan, India and Afghanistan.

It's there that deep differences continue to unsettle the world, and surprise American foreign policymakers with their lasting violence.