Lesotho–South Africa relations colony) in 1884. When the Union of South Africa was formed in 1910, there were moves by the UK to include Lesotho. However, in October 1966, the Kingdom gained full independence. Despite formal independence, the white-controlled government in South Africa played a major role in its neighbour's economic and political affairs, including supporting the government of Lesotho Prime Minister Chief Leabua Jonathan. In 1986, South Africa supported the coup d'état in Lesotho which brought Justin Lekhanya to power. In turn, Lekhanya's government expelled African National Congress members as well as technicians from North Korea, which led to significantly better relations
Geology of Lesotho yield and frequent springs. Steep terrain, rain and snow melt mean that Lesotho has a high risk of landslides. Lesotho has extensive diamond deposits in both kimberlites and alluvial gravel. The country has the highest concentration of kimberlite bodies in the world—a total of more than 400, including 343 dikes, 39 pipes and 23 blows. Northern Lesotho has an average of one kimberlite body for every 10 square kilometers. In spite of the large deposits, very few sites are mined and research is ongoing into alluvial deposits. The Karoo Supergroup hosts low-grade uranium and likely coal and coal-bed methane, although