For over a decade, Canada’s participation in the war in Afghanistan dominated media headlines, government discussions, academic studies, and the public international security debate. Now that the mission in Afghanistan is over, what issues should shape Canada’s international security agenda? This collection of essays, written by leading observers of Canadian policy, seeks to answer this question by investigating how Canada will likely respond to new threats and security challenges in light of the experience gained in Afghanistan. Topics include the future place of NATO in defence and security policy, regions of concern and interest, and nuclear weapons and arms control.