Botswana, officially the Republic of Botswana, is a landlocked country in Southern Africa. Botswana is topographically flat, with up to 70 percent of its territory being the Kalahari Desert. It is bordered by South Africa to the south and southeast, Namibia to the west and north, and Zimbabwe to the northeast. Its border with Zambia to the north near Kazungula is poorly defined due to being in the midst of the Zambezi River. This border with Zambia is, at most, a few hundred metres long.