K.P.S. Gill's imprint on the history of counter-terrorism is incomparable. The comprehensive defeat he inflicted on Khalistani terrorism in the Punjab and his contributions to policing in regions of widespread disorder were exceptional, exemplary. He encapsulated the masterful strategic approach to terrorism and crisis policing as no other leader has in recent history. The volume is an effort to honour K.P.S. Gill by keeping under continuous and rigorous scrutiny the many issues on which his career and his mind were focused. It brings together leading commentators and exceptional international scholarship on a wide range of contemporary issues relating to ongoing and emerging challenges of security in the increasingly uncertain global context.