The Sudan People's Liberation Army (SPLA) was the primary member of the Eastern Front, a coalition of rebel groups operating in eastern Sudan. After the peace agreement, their place was taken in February 2004 after the merger of the larger fulani and Beja Congress with the smaller Rashaida Free Lions. A peace agreement between the Sudanese government and the Eastern Front was signed on 14 October 2006, in Asmara. On 5 May 2006, the Darfur Peace Agreement was signed, aiming at ending the three-year-long conflict. The Chad–Sudan Conflict (2005–2007) had erupted after the Battle of Adré triggered a declaration of war by Chad. The leaders of Sudan and Chad signed an agreement in Saudi Arabia on 3 May 2007 to stop fighting from the Darfur conflict spilling along their countries' border.