Prime Minister of Thailand sixteen out of twenty-nine, including the incumbent General Prayut Chan-o-cha. Military dominance began with the country's second Prime Minister, Phot Phahonyothin, who ousted his civilian predecessor in a coup in 1933. The longest serving Prime Minister was Field Marshal Plaek Pibulsonggram at 14 years, 11 months and 18 days. The shortest was Tawee Boonyaket at just 18 days. Nine were removed by coups d'état, three were disqualified by court order, and eleven resigned from office. The youngest ever to occupy office was M.R. Seni Pramoj at 40 years old. Thailand received its first female prime minister, Yingluck Shinawatra, in 2011.
2014 Thai coup d'état Niwatthamrong attempted to establish a government-in-exile at the United States embassy in Bangkok, but the embassy denied the report. On the night of 22 May 2014, military officers detained additional politicians, including Chalerm Yubamrung and his sons. The following day, the NCPO summoned PTP members and Shinawatra family members, including Yingluck. Niwatthamrong and Yingluck surrendered themselves to the NCPO on that day. Yingluck was detained at an undisclosed "safe house". The NCPO said it released her on 25 May. The NCPO later summoned another 114 prominent figures from both sides and stated that those who refused to submit to it