The prince then allied himself with the Khmer Rouge, the North Vietnamese, the Laotian Pathet Lao and the Viet Cong, throwing his personal prestige behind the communists. On 5 May, the actual establishment of FUNK and of the Gouvernement royal d'union nationale du Kampuchéa or GRUNK (Royal Government of National Union of Kampuchea), was proclaimed. Sihanouk assumed the post of head of state, appointing Penn Nouth, one of his most loyal supporters, as prime minister.Khieu Samphan was designated deputy prime minister, minister of defense, and commander in chief of the GRUNK armed forces (though actual military operations were directed by Pol Pot). Hu Nim became minister of information, and Hou Yuon assumed multiple responsibilities as minister of the interior, communal reforms, and cooperatives. GRUNK claimed that it was not a government-in-exile since Khieu Samphan and the insurgents remained inside Cambodia. Sihanouk and his loyalists remained in China, although the prince did make a visit to the "liberated areas" of Cambodia, including Angkor Wat, in March 1973. These visits were used mainly for propaganda purposes and had no real influence on political affairs.For Sihanouk, this proved to be a marriage of convenience that was spurred on by his thirst for revenge against those who had betrayed him. For the Khmer Rouge, it was a means to greatly expand the appeal of their movement. Peasants, motivated by loyalty to the monarchy, gradually rallied to the GRUNK cause. The personal appeal of Sihanouk and widespread US aerial bombardment helped recruitment. This task was made even easier for the communists after 9 October 1970, when Lon Nol abolished the loosely federalist monarchy and proclaimed the establishment of a centralized Khmer Republic.The GRUNK was soon caught between the competing Communist powers: North Vietnam, China and the Soviet Union. During the visits that Chinese Premier Zhou Enlai and Sihanouk paid to North Korea in April and June 1970, respectively, they called for the establishment of a "united front of the five revolutionary Asian countries" (China, North Korea, North Vietnam, Laos, and Cambodia, the last being represented by the GRUNK). While the North Korean leaders enthusiastically welcomed the plan, it soon foundered on Hanoi's opposition. Having realized that such a front would exclude the Soviet Union and implicitly challenge the hegemonic role that the DRV had arrogated to itself in Indochina, the North Vietnamese leaders declared that all communist states should join forces against "American imperialism." Indeed, the issue of Vietnamese versus Chinese hegemony over Indochina greatly influenced the attitude Hanoi adopted towards Moscow in the early and mid-1970s. During the Cambodian civil war, the Soviet leaders, ready to acquiesce in Hanoi's dominance over Laos and Cambodia, actually insisted on sending their aid shipments to the Khmer Rouge through the DRV, whereas China firmly rebuffed Hanoi's proposal that Chinese aid to Cambodia be sent via North Vietnam. Facing Chinese competition and Soviet acquiescence, the North Vietnamese leaders found the Soviet option more advantageous to their interests, a calculation that played a major role in the gradual pro-Soviet shift in Hanoi's foreign policies.

Question: Whose job was to be the minister of the interior?
Answer: Hou Yuon