Patrice Lumumba was elected the first Prime Minister of the Republic of Congo, now the Democratic Republic of Congo, in May 1960, and in June 1960, the country achieved full independence from Belgium. In July, the Congo Crisis erupted with a mutiny among army, followed by the regions Katanga and South Kasai succeeding with support from Belgium, who wished to keep power over resources in the region, starting the Congo Crisis. Lumumba called in the United Nations to help him, but the U.N. force only agreed to keep peace and not stop the separatist movements. Lumumba then agreed to receive help from the USSR in order to stop the separatists, worrying the United States, due to the supply of uranium in the country. At first, The Eisenhower Administration planned to poison him with his toothpaste, but this was abandoned. The CIA sent CIA official Dr. Sydney Gottlieb with a poison to liaison with an African CIA asset code-named WI/Rogue who was to assassinate Lumumba, but Lumumba went into hiding before the operation was completed. The United States encouraged Mobutu Sese Seko, a colonel in the army, to overthrow him which he did on September 14, 1960. After being locked in prison, Mobutu sent him to Katanga, and he was executed soon after on January 17, 1961.