As the Laotian Civil War broke out between the Royal Lao Government and the Pathet Lao, Vientiane became unstable. In August 1960, Kong Le seized the capital and insisted that Souvanna Phouma become prime minister. In mid-December, Phoumi Nosavan then seized the capital, overthrew the Phouma Government, and installed Boun Oum as prime minister. In mid-1975, Pathet Lao troops moved towards the city and Americans began evacuating the capital. On 23 August 1975, a contingent of 50 Pathet Lao women symbolically liberated the city. On 2 December 1975, the communist party of the Pathet Lao took over Vientiane, defeated the Kingdom of Laos, and renamed the country the Lao People's Democratic Republic, which ended the Laotian Civil War. The next day, an Insurgency in Laos began in the jungle, with the Pathet Lao fighting factions of Hmong and royalists.