The concept of terrorism has changed a lot over the years. After World War II, terrorism has spread its wings in a new way. During and after the World War II the world has witnessed the emergence of some new terrorist groups who claimed themselves as freedom fighters in some cases. In the period of late 1960smany leftist radical groups had put their feet into the world of extremist terrorism. Soon after terrorist activities became immensely gruesome, bloodier as terrorists have become more advanced with the changing period of time and globalization.