Congolese army alleged Rwandan attacks on their troops, while Rwanda blamed the Congolese government for failing to suppress Hutu rebels in North and South Kivu provinces. In 2010, the United Nations released a report accusing the Rwandan army of committing wide scale human rights violations and crimes against humanity in the Democratic Republic of the Congo during the First and Second Congo Wars, charges denied by the Rwandan government. Relations soured further in 2012, as Kinshasa accused Rwanda of supporting the M23 rebellion, an insurgency in the eastern Congo. , peace has been restored and relations are improving. Rwanda's relationship with Uganda was also tense for much of the 2000s following a 1999 clash between the two countries' armies as they backed opposing rebel groups in the Second Congo War, but improved significantly in the early 2010s. In 2019, relations between the two countries deteriorated, with Rwanda closing its borders with Uganda. Administrative divisions Before western colonization, the Rwandan government system had a quasi-system of political pluralism and power sharing. Despite there being a strict hierarchy, the pre-colonial system achieved an established, combined system of “centralized power and decentralized autonomous units.” Under the monarch, the elected Chief governed a province that was divided into multiple districts. Two other officials appointed by head Chief governed the districts; one official was allocated power over the land while the other oversaw cattle. The king () exercised control through a system of provinces, districts, hills, and neighbourhoods. As of 2003, the constitution divided Rwanda into provinces (), districts (), cities, municipalities, towns, sectors (), cells (), and villages (); the larger divisions, and their borders, are established by Parliament. In January 2006, Rwanda was reorganized such that twelve provinces were merged to create five, and 106 districts were merged into thirty. The present borders drawn in 2006 aimed át decentralising power and removing associations with the old system and the genocide. The previous structure of twelve provinces associated with the largest cities was replaced with five provinces based primarily on geography. These are Northern Province, Southern Province, Eastern Province, Western Province, and the Municipality of Kigali in the centre. The five provinces act as intermediaries between the national government and their constituent districts to ensure that national policies are implemented at the district level. The Rwanda Decentralisation Strategic Framework developed by the Ministry of Local Government assigns to provinces the responsibility for "coordinating governance