John Battersby is the NZ Police Teaching Fellow at the Centre for Defence and Security Studies (CDSS), Massey University, Wellington, lecturing in Crime, Intelligence and Terrorism. John was a Research Historian with the Treaty Issues and International Law Team at the Crown Law Office, Wellington, followed by a number of years in law enforcement. He was the inaugural Police Research Fellow at the Centre for Strategic Studies, Victoria University of Wellington in 2016 and has since become a Teaching Fellow at CDSS specialising in intelligence and counter terrorism. He contributes to professional development programmes with a number of different agencies. He has published on aspects of the New Zealand Wars, New Zealand security in the twentieth century and more recently terrorism. John is a frequent commentator in New Zealand and overseas media on intelligence, terrorism and gun control issues.