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.