The Afghanistan War and its legacy continue to exert a profound influence over Canada's national security policy. In this episode, we reflect on Canada's role within the war and the international humanitarian law that governed the conflict. We speak with Retired Maj Gen Blaise Cathcart, Judge Advocate General of the Canadian Armed Forces (2010–2017), and Professor Mary Ellen O'Connell, Research Professor of International Dispute Resolution at the Kroc Institute for International Peace Studies at Notre Dame.