This document discusses terrorism, including its definition, history, types, causes, and ways to counter it. Terrorism is defined as unlawful violence intended to intimidate governments or societies for political, religious, or ideological goals. The document outlines domestic terrorism, which targets a country's internal elements, and international terrorism, which involves foreign-based groups. Prevention of terrorism is said to require education, understanding cultural differences, and eliminating root causes such as poverty, religious fanaticism, and state sponsorship. Counterterrorism involves proactive policies to eliminate terrorist groups and environments, while antiterrorism uses defensive measures. The document also discusses balancing security and individual liberty in countering terrorism.