The Central Committee met again in January 1965 to denounce the "peaceful transition" to socialism espoused by Soviet Premier Nikita Khrushchev, accusing him of being a revisionist. In contrast to Khrushchev's interpretation of Marxism–Leninism, Sâr and his comrades sought to develop their own, explicitly Cambodian variant of the ideology. Their interpretation moved away from the orthodox Marxist focus on the urban proletariat as the forces of a revolution to build socialism, giving that role instead to the rural peasantry, a far larger class in Cambodian society. By 1965, the party regarded Cambodia's small proletariat as full of "enemy agents" and systematically refused them membership. The party's main area of growth was in the rural provinces and by 1965 membership was at 2000. In April 1965, Sâr travelled by foot along the Ho Chi Minh Trail to Hanoi to meet North Vietnamese government figures, among them Ho Chi Minh and Lê Duẩn. The North Vietnamese were preoccupied with the ongoing Vietnam War and thus did not want Sâr's forces to destabilize Sihanouk's government; the latter's anti-American stance rendered him a "de facto" ally. In Hanoi, Sâr read through the archives of the Workers' Party of Vietnam, concluding that the Vietnamese Marxist–Leninists were committed to pursuing an Indochinese Federation and that their interests were therefore incompatible with Cambodia's.