In a 2008 interview with CNN's Dan Rivers, Imam Samudra, the main actor in the 2002 Bali bombing in Indonesia, said declared that he would never apologize to non-Muslims. victims of the tragedy. His reason was that his religion, Islam, based on his interpretation and understanding, allows him to kill infidels (CNN, 2008; Rivers, 2008). Furthermore, Imam Samudra viewed his actions as jihad in the sense of an “obligation to wage a limited war” (Hassan, 2007). In the same interview, Imam Samudra's fellow terrorist Amrozi put on a happy face and said "Alhamdulillah", meaning "Thank God", when Rivers showed photos of the victims and other images linked to his terrorist act in Bali (CNN, 2008). Using Kaplan and Weinberg's (1998) approach to extremism, Samudra and Amrozi's thinking obviously shows that they are extremists, particularly in their antagonism with other groups based on their own moral legitimacy. But, at the same time, they are clearly found guilty of terrorism. What is the link between the terms extremism and terrorism? This short article would attempt to answer the question by discussing the proportion that although all terrorists are extremists, not all extremists are terrorists. In addition to providing clear definitions of these terms, this essay will also attempt to explain and evaluate the definitions using arguments and examples. The terms or behaviors of extremism and terrorism may share some similarities, but, in fact, they have subtle differences. It is perhaps more understandable that all terrorists are extremists, but the question that might arise is: does resorting to an extreme religious, political or ideological view necessarily imply terrorism? Some scholars might argue that the terms extremism and terrorism are difficult to define (Juergensmeyer, 2003). However, borrowing Pressman and Flockton's (2014) view of the terms, it is more likely acceptable that even though extremism does not require violent actions, terrorism still requires violence to achieve certain political goals ( p.123). According to Kaplan and Weinberg (1998), extremism is a perspective that defines reality into two opposing categories: black and white, good and evil, right and wrong. They stated that “[it] is a vision…built around monism and moralism that rejects ambiguity” (p. 11). This means that the extremists' view on these categories is strict and uncompromising. put themselves on the “good” side while labeling others as “bad” or “bad” »”.