Zambia tributaries rise in Angola's central highlands. The edge of the Cuando River floodplain (not its main channel) forms Zambia's southwestern border, and via the Chobe River that river contributes very little water to the Zambezi because most is lost by evaporation. Two of the Zambezi's longest and largest tributaries, the Kafue and the Luangwa, flow mainly in Zambia. Their confluences with the Zambezi are on the border with Zimbabwe at Chirundu and Luangwa town respectively. Before its confluence, the Luangwa River forms part of Zambia's border with Mozambique. From Luangwa town, the Zambezi leaves Zambia and flows into Mozambique, and
Zambia–Zimbabwe relations against the "sustained malicious campaign against Zambia." Following the controversial Zimbabwean presidential election of 2008, Zambian President Levy Mwanawasa described Mugabe's Zimbabwe as a "regional embarrassment". A dormant dispute remains where Botswana, Namibia, Zambia, and Zimbabwe's boundaries converge. Zambia–Zimbabwe relations Zambia–Zimbabwe relations are bilateral relations between Zambia and Zimbabwe, two neighbouring states in Southern Africa. From 1953 to 1963 they were, along with Nyasaland (now Malawi) part of the Federation of Rhodesia and Nyasaland. Initially the two countries had good relations after gaining independence. However, relations have recently been strained as Zambia, like Botswana, has reported similar 'smear campaigns' against