August: The FNL claimed responsibility for massacring 160 Congolese Tutsis at the Gatumba refugee camp near the DRC border.
December: The United Nations peacekeeping mission, known as ONUB, opened disarmament camps to demobilize around 55,000 former combatants.
2005
January: Fighting involving the FNL in Bujumbura displaced 25,000 people.
May 16: FNL leader Agathon Rwasa and Burundian President Dominitien Ndayizeye signed a peace declaration in Dar es Salaam, Tanzania. The two pledged an immediate cessation of hostilities and agreed to set up a technical commission to establish a formal cease-fire within a month.
May: Fighting broke out between the military and FNL one week after the cease-fire agreement.
Sept. 14: FNL rebels rejected peace negotiations, saying it did not recognize the government because it was "imposed by the international community and it was not elected by the Burundian people."
November-December: The Burundi government launched a new offensive to eliminate the FNL.
2006
July: The Burundian army announced it had arrested three senior commanders of the FNL. They were captured during a raid on the outskirts of the capital Bujumbura.
Sept. 7: The FNL signed a cease-fire with the government and agreed to demobilize. The agreement included amnesty and government posts for FNL leaders and integration of FNL fighters into the army.
2007
May 12: A South African mediator arrived in Bujumbura to revive stalled peace talks between the government and the FNL. The FNL quit a joint cease-fire monitoring team the previous month.
July: FNL representatives withdrew from the truce monitoring team for the second time within months.
September: FNL splinter groups fought among themselves in Bujumbura, resulting in the death of 20 militants. Some FNL components also clashed with government troops.
October: Clashes among FNL factions continued. In two separate skirmishes near Bujumbura, 14 militants were killed.
December: FNL fighters attacked a Burundi army unit in Bubanza province.
2008
March 1: FNL leaders approved a negotiated plan of action for peace at meetings with the government in Dar es Salaam. The government had approved the plan in late February.
April: The FNL withdrew from the peace verification and monitoring plan. Members of the group argued that the existing legal framework granting FNL members provisional immunity was not sufficient and that a new law was required as a precondition for their return.
April 17: The FNL issued a statement reserving its right to defend itself should the government attack its positions. Fighting broke out in the capital of Bujumbura on the same day, with the FNL and the government accusing each other of instigating the conflict. Ten rebels, four government troops and one civilian were killed. The government subsequently began air strikes on FNL targets.
April 21: The FNL called for an end to the government’s military offensive, the provision of food aid to FNL combatants and the resumption of negotiations.
May: The FNL indicated it would resume participation in the verification and monitoring program, followed by a renewal of the cease-fire. FNL leader Agathon Rwasa returned home from exile in Tanzania.
June 16: FNL’s Rwasa declared the war over and ordered FNL fighters to remain in various cantonment areas.
July 25: More than 2,000 FNL fighters assembled at a cantonment site in Rugazi, though only around 40 weapons were handed over. The government issued a statement saying "all the combatants still holding weapons are considered criminals."
Aug. 29: FNL and government representatives agreed to a reconciliation process to implement the original 2006 cease-fire. The government agreed to release some FNL detainees, while the FNL agreed to withdraw combatants to specified areas.
Oct. 20: Peace negotiations hit a stumbling block over the name Palipehutu, which means "for the Hutu alone." The government claimed the FNL could not keep the name, since Burundi’s constitution forbids political parties with ethnic affiliations. The rebels refused to drop the name.