International legal personality has often been viewed as synonymous with statehood. States are the primary subjects of international law, and only they have general competence on the international plane, including the competence to create the law. However, in the 1949 Reparation for Injuries advisory opinion, the International Court of Justice (ICJ) acknowledged that forms of international legal personality other than statehood could exist. In determining whether the United Nations (UN) was an international person, the ICJ considered the functions and rights which had been conferred on the organization pursuant to the UN Charter. Although these were found to be distinct from the rights and duties possessed by States, the ICJ concluded that these necessarily involved “a large measure of international personality and the capacity to operate on an international plane.” According to the Court, the hallmarks of international legal personality included the ability to possess international rights and duties and the capacity to maintain such rights by bringing international claims.