Thinking about durable political violence / Brendan O'Leary, John Tirman -- ETA: Euskadi 'ta Askatasuna / Marianne Heiberg -- FARC-EP: Las Fuerzas Armadas Revolucionarias de Colombia-Ejercito del Pueblo / Marc Chernick -- GAM: Gerakan Aceh Merdeka (Free Aceh Movement) / Kirsten E. Schulze -- Hamas: Harakat al-Muqawama al-Islamiyya / Jeroen Gunning -- Hizballah / Jeroen Gunning -- IRA: Irish Republican Army (Oglaigh na hEireann) / Brendan O'Leary -- JKLF and JKHM: Jammu and Kashmir Liberation Front and Jammu and Kashmir Hizb-ul Mujahideen / Sumantra Bose -- LTTE: Liberation Tigers of Tamil Eelam / Brendan O'Duffy -- PCP-SL: Partido Comunista de Peru-Sendero Luminoso / Marc Chernick -- PKK: Partiya Karkarên Kurdistan / Dogu Ergil -- PLA CPN (M): People's Liberation Army of the Communist Party of Nepal (Maoist) / Harald Olav Skar -- Understanding persistent conflicts: bridging research and policy / Brendan O'Leary, Andrew Silke.