Muhammad Haniff Hassan is a Research Fellow at the S. Rajaratnam School of International Studies, Nanyang Technological University, Singapore. His research interests focus on jihad, jihadism, ideology of Muslim radical groups, Islamism, wasatiyah, and contemporary Islamic jurisprudence. He has published twelve volumes in his name, co-authored a monograph and helped publish two volumes for Association of Islamic Religious Teachers and Scholars of Singapore PERGAS and the Islamic Religious Council of Singapore. His most recent book is The Father of Jihad: Abd Allah Azzam’s Jihad Ideas and Implications to National Security (2014).