Prime Minister of Thailand Rajanubhab took over this role. In fact, the office most considered the precursor of that of the prime minister was the ancient office of "Samuha Nayok" (สมุหนายก), which was run by an "Akkhra Maha Senabodi" (อัครมหาเสนาบดี) or "chief minister in charge of civilian affairs". The first Prime Minister of Siam was Phraya Manopakorn Nititada, a judge. The title of the office was changed from "Prime Minister "of Siam"" to "Prime Minister "of Thailand"" in 1945 and then permanently with the renaming of Siam to Thailand in 1949. For most of its existence the office has been occupied by Army leaders;
Prime Minister of South Korea as official English title. The short title in Korean is just "Chongni". The position was created on 31 July 1948, two weeks before the government of South Korea was founded, and was held by Lee Beom-seok until 1950. The title was Chief Cabinet Minister from 1961 until 1963. On 27 April 2014, Prime Minister Chung Hong-won announced his desire to resign. However, due to unsuccessful nominations, Chung remained in office until February 2015. On 23 January 2015, President Park Geun-hye named Saenuri's Floor Leader Lee Wan-koo as the new Prime Minister. Lee was confirmed by the National Assembly as Prime