ISIS is a terrorist organization, but it isn’t only a terrorist organization. It is also a mafia adept at exploiting decades-old transnational gray markets for oil and arms trafficking. It is a conventional military that mobilizes and deploys foot soldiers with a professional acumen that has impressed members of the US military. It is a sophisticated intelligence-gathering apparatus that infiltrates rival organizations and silently recruits within their ranks before taking them over, routing them in combat, or seizing their land. It is a slick propaganda machine effective at disseminating its message and calling in new recruits via social media.