This study deals with the Kurdistan Workers' Party (PKK) as a non-state actor. It examines the internal environment in Turkey and the PKK's material strength before moving on to the external environment and the PKK's entry into an international conflict, focusing on historical development since the end of the Cold War. The paper argues that non-state actors contribute to international anarchy and conflict through competition with the state over the monopoly of power and the acquisition of territory, identity and resources. It also stipulates that the PKK benefited from the internal and external environmental variables contributing to international conflict. The study concludes that the entry of the PKK, which originated in Turkey, into an international conflict took place in several stages: the competition with the state for power; the influence of its foreign policy choices; the acquisition of new territories; and extra-territorial action.