Dr. Joel Negin is a professor and head of the School of Public Health at the University of Sydney. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. J. Negin and Others. Australian Firearm Regulation at 25 \u2014 Successes, Ongoing Challenges, and Lessons for the World. N Engl J Med 2021;384:1581-1583.