Prof. Dr. Tulus Warsito is professor of international relations, Universitas Muhammadiyah Yogyakarta. Currently, he was head of PhD program in political Islam. He earned BA, MA and PhD in international relations from Universitas Gadjah Mada Yogyakarta. As academician, he has wide experiences which specialized on international politics and cultural diplomacy. He was in the USA for several years before join with Universitas Muhammadiyah Yogyakarta. Surprisingly, he is also as a painter who has own arts gallery near his house. Riht now, he teaches Economic Problem and International Politics and Contemporary Diplomacy Theory. He has written many books such as Cultural Diplomacy (Diplomasi Kebudayaan), and the last book he wrote is Political Rationality (Rasionalitas Politik).