Internal Security Operations Command (Thai: กองอำนวยการรักษาความมั่นคงภายในราชอาณาจักร; RTGS: kong amnuaikan raksa khwam mankhong phainai ratcha-anachak ) or ISOC (Thai: กอ.รมน.; RTGS: khor ror mor nor) is the political arm of the Thai military. It was responsible for the suppression of leftist groups from the 1960s to the 1980s. During this period it was implicated in atrocities against activists and civilians. ISOC was implicated in a plot to assassinate Prime Minister Thaksin Shinawatra.