In May 1973, Pol Pot ordered the collectivisation of villages in the territory it controlled. This move was both ideological, in that it built a socialist society void of private property, and tactical, in that it allowed the Khmer Rouge greater control over the food supply, ensuring that farmers did not provision government forces. Many villagers resented the collectivisation and slaughtered their livestock to prevent it from becoming collective property. Over the following six months, about 60,000 Cambodians fled from areas under Khmer Rouge control. The Khmer Rouge introduced conscription to bolster its forces. Relations between the Khmer Rouge and the North Vietnamese remained strained. After the latter temporarily reduced the flow of arms to the Khmer Rouge, in July 1973 the CPK Central Committee agreed that the North Vietnamese should be considered "a friend with a conflict". Pol Pot ordered the internment of many of the Khmer Rouge who had spent time in North Vietnam and were considered too sympathetic to them. Most of these people were later executed.