Contents: the context for internal security; the internal security operation (evolution of internal security; benefits of intelligence; intelligence collection; threat assessment; Republican reaction: hunger strikes); background of the troubles; participants in the struggle (Provisional IRA; INLA; Loyalist Paramilitaries; political parties; The Republic); obstacles to peace; prospects for the future. Appendices: chronology of violence and intimidation; major participants in the struggle; threat assessment in Scotland Yard; and statistics on internal security. Maps and photos.