Question: Which city in central Niger was where weapons were burned in September 2000 to commemorate a peace agreement?

<P0-S0> Plan Colombia was the name of a United States foreign aid, military and diplomatic initiative aimed at combating Colombian drug cartels and left-wing insurgent groups in Colombia. <P0-S1>  The plan was originally conceived in 1999 by the administrations of Colombian President Andrés Pastrana and US President Bill Clinton, and signed into law by the U.S in 2000. <P0-S2>  The official objectives of Plan Colombia were to end the Colombian armed conflict by increasing funding and training of Colombian military and para-military forces and creating an anti-cocaine strategy to eradicate coca cultivation, though critics claim this largely served as a cover to increase U.S. military presence and protect U.S. corporate interests in the region. <P0-S3>  Plan Colombia in its initial form existed until 2015, with the United States and the Colombian government seeking a new strategy as a result of the peace talks between the Colombian government and the FARC. <P0-S4>  The new program is called "Peace Colombia" and seeks to provide Colombia with aid after the implementation of the Peace Agreement in 2017 with the FARC. <P0-S5>  However, there remain several U.S. military bases and close to 1000 U.S. Marines in Colombia who have yet to withdraw from the country in accordance with the new peace agreement, and show little indication of doing so. <SEP> <P1-S0> Concord Day marks the anniversary of the signing of the 24 April 1995 Peace Accord between the Government of Niger and the Organisation of Armed Resistance ("Organization de Resistance Armee", ORA) at the Congressional Palace in Niamey ("Palais des Congrès de à Niamey"). <P1-S1>  While this accord was signed only by some armed groups and sporadic fighting continued until 1999, it marked the beginning of the end of the 1990 rebellion in the north and east of the country carried out by elements of Tuareg, Toubou, and other communities. <P1-S2>  The final peace agreement was celebrated with a "Flame of Peace" in which weapons were burned in Agadez on 25 September 2000, a date that is also commemorated each year in some communities. <SEP> <P2-S0> The Tuareg Rebellion of 2007–2009 was an insurgency that began in February 2007 amongst elements of the Tuareg people living in the Sahara desert regions of northern Mali and Niger. <P2-S1>  It is one of a series of insurgencies by formerly nomadic Tuareg populations, which had last appeared in the mid-1990s, and date back at least to 1916. <P2-S2>  Populations dispersed to Algeria and Libya, as well as to the south of Niger and Mali in the 1990s returned only in the late 1990s. <P2-S3>  Former fighters were to be integrated into national militaries, but the process has been slow and caused increased resentment. <P2-S4>  Malian Tuaregs had conducted some raids in 2005–2006, which ended in a renewed peace agreement. <P2-S5>  Fighting in both nations was carried on largely in parallel, but not in concert. <P2-S6>  While fighting was mostly confined to guerrilla attacks and army counterattacks, large portions of the desert north of each nation were no-go zones for the military and civilians fled to regional capitals like Kidal Mali and Agadez Niger. <P2-S7>  Fighting was largely contained within Mali's Kidal Region and Niger's Agadez Region. <P2-S8>  Algeria helped negotiate an August 2008 Malian peace deal, which was broken by a rebel faction in December, crushed by the Malian military and wholescale defections of rebels to the government. <P2-S9>  Niger saw heavy fighting and disruption of Uranium production in the mountainous north, before a Libyan backed peace deal, aided by a factional split among the rebels, brought a negotiated ceasefire and amnesty in May 2009. <SEP> <P3-S0> Agadez, formerly spelled Agades, is the largest city in central Niger, with a population of 118,244 (2012 census). <P3-S1>  It lies in the Sahara and is the capital of Aïr, one of the traditional Tuareg–Berber federations. <P3-S2>  The city is also the capital of the Agadez Region. <P3-S3>  As of 2011, the urban commune had a total population of 124,324 people.