sentences:  On 10 January 2007, he was appointed as the Prime Minister of Kazakhstan.On 24 September 2012, he became the Head of the Presidential Administration and at the same time served as an Acting State Secretary of Kazakhstan from 21 January to 2 April 2014, where that day, he became the Prime Minister.On 8 September 2016, Massimov was appointed as the chairman of the National Security Committee.