and dissatisfaction that threaten the security of the Indonesian State and People". Ultimatum The PRRI was proclaimed to have been established on 15 February 1958 by Lieutenant Colonel Ahmad Hussein following the expiration of a five-day ultimatum to the government. The ultimatum demanded for three things. First, for the Djuanda Cabinet to return its mandate. Second, for Mohammad Hatta and the Sultan of Yogyakarta (Hamengkubuwono IX) to form a cabinet until a future election. Third, for President Sukarno to return to his constitutional position. Following the declaration, a number of government officials sent to negotiate with the Banteng Council in Bukittinggi were detained, including Minister of Agriculture Eny Karim. Members of the PRRI cabinet The Revolutionary Government of the Republic of Indonesia formed a cabinet for the revolutionary government, with Sjafruddin Prawiranegara being named as both its prime minister and finance minister. The composition was as follows: Challenges Despite the various stakeholders who had appeared to all be on the same side of resisting Central Government control to some extent, the declaration of the rebel government and the open split from the Central Government in Jakarta had immediately highlighted that not all parties were willing to take things to such an extreme. One of these unwilling parties was the Garuda Council led by Lieutenant Colonel Barlian. Even within Lieutenant Colonel Ahmad Hussein's Banteng Council, there were key leaders and segments who opposed the establishment of the PRRI. The lack of alienation from the political order of that time also meant that there was no real support or traction on the ground at all for such an open rebellion. Giving no slack to the PRRI, the Central Government in Jakarta also moved decisively against the PRRI, arresting several of the named cabinet ministers, discharging from service military commanders who supported the PRRI and bombing key infrastructure in Sumatra. Beginning of the end The Central Government in Jakarta, having tolerated the dissident Army Councils for almost twelve months, promptly began preparations to militarily defeat the PRRI. The rebels had virtually no chance of success given the overwhelming superiority of the government forces. In addition, the military experience possessed by General Nasution, who was leading the government military forces, far exceeded that of Lieutenant Colonel Husein. The government military campaign that commenced on 12 March 1958 scored a quick victory in preventing the destruction of the Caltex oil fields and refinery in Pekanbaru