CNN Anchor and Senior National Correspondent Sara Sidner provides a comprehensive overview of the extremist group Hamas. Sidner explores the origins and philosophy of Hamas, including their current military capabilities and how the organization just inflicted the deadliest attack in Israel's 75-year history, overwhelming the most powerful and advanced military in the Middle East. Featuring archival CNN reporting in the region and interviews with CNN experts, including Chief International Anchor Christiane Amanpour, Senior International Correspondent Sam Kiley, and International Diplomatic Editor Nic Robertson, Sidner unravels the complicated history of Hamas and the catalysts that led to the terrorist attack on Israel.