Chapter 5 adds to the contemporary discourse on human rights obligations of non-state armed groups by showing that in many situations, there is a clear legal need for these obligations. This chapter first engages in the debate on whether and to what extent certain human rights treaties address armed groups directly. Second, it shows that under the law of state responsibility, states are generally not responsible for human rights violations committed by non-state entities. Third, it recalls that under international human rights law, states have an obligation to protect human rights against violations committed by armed groups. However, it argues that because this cannot be a strict obligation but is one that depends on states’ capacities and the particular circumstances, often this framework cannot adequately protect individuals against human rights violations by armed groups. The result is a legal and practical need for human rights obligations of non-state armed groups.