Next, in the early 1960s, the party experienced more internal strife due to the Sino-Soviet split. The party was divided between supporters of the Soviet Union under Nikita Khrushchev and those who claimed Khrushchev was a "revisionist" and chose instead to follow China under Mao Zedong. Subsequently, the CPNZ under the leadership of Victor Wilcox became the first official Communist party in the First World to side with Mao. The majority of the party and its newspaper "The People's Voice" adopted Maoism, while supporters of Khrushchev's Soviet Union (mainly Auckland trade unionists) split off to form the Socialist Unity Party. The Communist Party also maintained warm ties with the Indonesian Communist Party and supported Indonesia during the Indonesian-Malaysian Confrontation (1963–1966). It also condemned the Indonesian mass killings that followed the alleged 30 September coup attempt as a right wing coup.