On Thursday a video showing four U.S. Marines purportedly urinating on the corpses of three dead Taliban fighters went viral on the internet. Defense secretary Leon Panetta called the behavior “utterly deplorable” and Afghanistan president Hamid Karzai decried the video as “completely inhumane.” The video comes at a tense time, as the U.S. tries to foster peace talks between the Taliban and Karzai’s government. Sebastian Junger, author of “War” and co-director of the award-winning documentary “Restrepo”, speaks about this type of behavior in the military.