at this point that he began referring to himself as "Pol", a name he later lengthened to "Pol Pot". By September, he was based at a camp on the border of Kratie and Kompong Thom, where he convened a meeting of the CPK Standing Committee. Although few senior members could attend, it issued a resolution setting out the principle of "independence-mastery", the idea that Cambodia must be self-reliant and fully independent of other countries. In November, Pol Pot, Ponnary, and their entourage relocated to the K-1 base at Dângkda. His residence was set up on the northern side of the Chinit river; entry was strictly controlled. By the end of the year, Marxist forces had a presence in over half of Cambodia; the Khmer Rouge played a restricted role in this, for throughout 1971 and 1972, the majority of fighting against Lon Nol was carried out by Vietnamese or by Cambodians under Vietnamese control. In January 1971, a Central Committee meeting was held at this base, bringing together 27 delegates to discuss the war. During 1971, Pol Pot and the other senior party members focused on the construction of a regular Khmer Rouge army and administration that could take a central role when the Vietnamese withdrew. Membership of the party was made more selective, permitting only those regarded as "poor peasants", not those seen as "middle peasants" or students. In July and August, Pol Pot oversaw a month-long training course for CPK cadres in the Northern Zone headquarters. This was followed by the CPK's Third Congress, attended by around 60 delegates, where Pol Pot was confirmed as the Secretary of the Central Committee and Chairman of its Military Commission. Continuing the conflict: 1972 In early 1972, Pol Pot embarked on his first tour of the Marxist-controlled areas across Cambodia. In these areas, called "liberated zones", corruption was stamped out, gambling was banned, and alcohol and extramarital affairs were discouraged. From 1970 to 1971, the Khmer Rouge had generally sought to cultivate good relations with the inhabitants, organising local elections and assemblies. Some people regarded as hostile to the movement were executed, although this was uncommon. Private motor transport was requisitioned. Wealthier peasants had their land redistributed so that by the end of 1972, all families living in the Marxist-controlled areas possessed an equal amount of land. The poorest strata of Cambodian society benefited from these reforms. From 1972, the Khmer