In the second episode of this series, I look at a period marked first by escalating violence, heightened international attention, and a growing complexity that made resolution through force increasingly elusive for both sides. The initial mediation efforts of 2000 established a delicate humanitarian opportunity; however, the issues surrounding sovereignty, autonomy, disarmament, and political authority continued to linger without resolution. By 2003, the negotiations for a ceasefire had fallen apart, leading Indonesia to reinstate martial law in Aceh. I analyze the intergroup threat system that fueled the conflict: Jakarta's apprehension about territorial fragmentation and GAM's concern that political commitments would once more yield to military dominance. The military campaign diminished GAM's strength but failed to establish a lasting political resolution. Back-channel communications featuring Jusuf Kalla, Farid Husain, Juha Christensen, and Martti Ahtisaari steadily paved the way for a return to meaningful negotiations. Then, an unimaginable tragedy occurred. On December 26, 2004, the Indian Ocean tsunami struck with devastating magnitude, leaving Aceh in ruins. The disaster revised the political landscape. In Helsinki, in January 2005, Indonesia and GAM began to forge a comprehensive agreement that encompassed self-government, the establishment of local political parties, revenue sharing, disarmament, troop relocation, amnesty, and international oversight. The agreement brought an end to the conflict. No agreement is flawless, and certain tensions continue to arise, in ways that others have not.