The Lao Issara (ລາວອິດສະລະ Free Laos) was an anti-French, nationalist movement formed on 12 October 1945 by Prince Phetsarath. This short-lived movement emerged after the Japanese defeat in World War II and became the government of Laos before the return of the French. It aimed to prevent the French from restoring their control over Laos. The group disbanded in 1949. In 1944, France was liberated and General Charles de Gaulle was brought into power. At the same time, Japanese Empire troops were being largely defeated in the Pacific Front and in a last-minute attempt of trying to draw support, Japan dissolved French control over its Indochinese colonies in March 1945. Large numbers of French officials in Laos were then imprisoned by the Japanese. King Sisavang Vong was also imprisoned and was forced by the Japanese, and with the urging of Prime Minister Prince Phetsarath, into declaring his Kingdom of Luang Phrabang within the French Protectorate of Laos as an independent state while accepting it into the Greater East Asia Co-Prosperity Sphere on 8 April 1945. Prince Phetsarath remained as Prime Minister in the newly independent nation. At the same time, remaining French officials and civilians withdrew to the mountains to regroup and join a growing Laotian insurgency against the Japanese, who occupied Vientiane in March 1945. Led by Crown Prince Savang Vatthana, Laotian insurgents challenged Japanese forces by carrying out attacks on Japanese officials and troops in Laos and many Lao died fighting with the French resistance against the Japanese occupiers. After Japan's surrender in August, King Sisavang Vong agreed with the French that he intended to have Laos resume its former status as a French colony against the urging of Prince Phetsarath, who sent a telegram to all Laotian provincial governors notifying them that the Japanese surrender did not affect Laos' status as independent and warning them to resist any foreign intervention.