Colombia’s half-century war with the Revolutionary Armed Forces of Colombia (FARC) has cost the lives of hundreds of thousands of people and remains Latin America’s longest armed conflict. After more than three years of talks, the Colombian government and the guerrillas are nearing a self-imposed deadline for the completion of peace negotiations. Despite the support that the peace process enjoys outside Colombia, key provisions already agreed to are leading many to reject the agreement. José Miguel Vivanco will explain why the lack of meaningful accountability for crimes against humanity committed by both parties contravenes international law, delegitimizes the negotiations, and undermines the chance for sustainable peace. Adam Isacson will make the case in favor of the agreement.