The Cuango or Kwango is a transboundary river of Angola and Democratic Republic of Congo. It is the largest left bank tributary of the Kasai River in the Congo River basin. It flows through Malanje in Angola. The Kwango River basin has large resources of diamonds in the Chitamba-Lulo Kimberlite Cluster in Lunda Norte Province, discovered in the main river channel and on flats and terraces in its flood plains.

The National Union for the Total Independence of Angola is the second-largest political party in Angola. Founded in 1966, UNITA fought alongside the Popular Movement for the Liberation of Angola (MPLA) in the Angolan War for Independence (1961–1975) and then against the MPLA in the ensuing civil war (1975–2002). The war was one of the most prominent Cold War proxy wars, with UNITA receiving military aid initially from the People's Republic of China from 1966 until October 1975 and later from the United States and apartheid South Africa while the MPLA received support from the Soviet Union and its allies, especially Cuba.