stylistic:style_transfer, linguistic:paraphrasing
Rise of the PKI

Tensions between the military and communists increased in April 1965, when PKI chairman Aidit called for the formation of a "fifth armed force" consisting of armed peasants and labour. Sukarno approved this idea and publicly called for the immediate formation of such a force on 17 May 1965. However, Army Chief Ahmad Yani and Defence Minister Nasution procrastinated in implementing this idea, as this was tantamount to allowing the PKI to establish its own armed forces. Soon afterwards, on 29 May, the " Gilchrist Letter " appeared. The letter was supposedly written by the British ambassador Andrew Gilchrist to the Foreign Office in London, mentioning a joint American and British attempt on subversion in Indonesia with the help of "local army friends". This letter, produced by Subandrio, aroused Sukarno's fear of a military plot to overthrow him, a fear which he repeatedly mentioned during the next few months. The Czechoslovakian agent Ladislav Bittman who defected in 1968 claimed that his agency (StB) forged the letter on request from PKI via the Soviet Union, to smear anti-communist generals. On his independence day speech of 17 August 1965, Sukarno declared his intention to commit Indonesia to an anti-imperialist alliance with China and other communist regimes and warned the Army not to interfere. He also stated his support for the establishment of a "fifth force" of armed peasants and labour.