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;
2014 Thai coup d'état the 2007 constitution, save the second chapter which concerns the king, declared martial law and curfew nationwide, banned political gatherings, arrested and detained politicians and anti-coup activists, imposed Internet censorship and took control of the media. The NCPO issued an interim constitution granting itself amnesty and sweeping power. The NCPO also established a military dominated national legislature which later unanimously elected General Prayut as the new prime minister of the country. In the 2011 general election, Yingluck Shinawatra and the Pheu Thai Party (PTP) won a landslide victory and formed the government with Yingluck as prime minister. Anti-government protests, led