This document summarizes Hemant Hemant's paper on understanding why individuals stay religious extremists through cognitive dissonance and self-affirmation theories. It begins by providing context on the history of terrorism and its various waves. It then discusses Leon Festinger's cognitive dissonance theory, which posits that individuals resolve mental conflicts between beliefs and actions by reducing conflicting beliefs, increasing existing beliefs, or changing beliefs/actions. The document applies this to explain how extremists rationalize staying in terrorist organizations. It also discusses self-affirmation theory and how extremists use it to justify their beliefs even when given conflicting evidence of harm. Lastly, it proposes recommendations for deradicalization efforts combining these theories' insights with soci