A story from cowards (Iraqi Army) to champions (Kurdish Peshmerga). As Europe reels from the coordinated bombing attacks by terrorists in Belgium, the civilized world continues to face the real challenges of fighting Islamic extremism, whether it be on a battlefield or hiding and festering in a family neighborhood. Here in America, with investigations ongoing into ISIS in all 50 states, this new episode of "War Stories" goes deep inside the confrontation between moderate Muslims and the Islamic State's extremist ideology.