One of the fundamental principles of the Islamic Republic of Iran in its foreign policy during the last four decades have been to support the liberating movements, specifically the Islamic movements. This policy has been formed according to ideals of Iranians, and based on the Islamic worldview of the Islamic Republic of Iran and its revolutionary discourse. In fact, it has been emphasized in our constitutional law and other legal documents. On the other hand, support of these movements is not only in the direction of our national and ideological benefits, but also, according to completely lawful standards of international law and specifically human rights concerning fate determination and the right of lawful defense. In spite of all these facts, since the victory of the Islamic revolution, the Western countries and, following them, the Western media have continuously accused Iran of supporting terrorism and terroristic groups. This paper is going to explain the difference between these events and the terroristic groups according to international law, human rights and humanitarian principles.