One of the most dreaded terrorist groups in Southeast Asia, Jemaah Islamiyah (JI) is presently facing a leadership crisis. The arrest of two of its most prominent leaders, Abu Dujana and Zarkasih (also known as Yusron Mahmudi and Abu Irsyad respectively) has jeopardized JI’s future plans in the region. Of late, JI has faced the wrath of the anti–terrorist initiatives by the Indonesian government duly supported by other Southeast Asian neighbours as well as Australia.