 On 18 February 1959, the Constitution Preparation Committee decided the 1959 plenary session of the Assembly would begin on 29 April 1959 (subsequently brought forward a week) and would discuss the form of the state and government, the preamble to the constitution and the broad outlines of state policy.However, the following day, the cabinet decided to implement Sukarno's concept of Guided Democracy under the 1945 Constitution.Army Chief of Staff General Abdul Haris Nasution had first proposed a return to Indonesia's original constitution in August 1958.