During the 1950s, the party began publishing again; its main publications were "Harian Rakyat" and "Bintang Merah", as well as quarterly journal "PKI dan Perwakilan". The PKI committed itself to a nationalist position under Aidit's leadership, supporting Indonesian president Sukarno's anti-colonialist and anti-Western policy. Aidit and his faction, which included young leaders such as Sudisman, Lukman, Njoto and Sakirman, took charge of the party in 1951; none were more than 30 years old. Under Aidit, the PKI grew rapidly—from 3,000-5,000 in 1950 to 165,000 in 1954 and 1.5 million in 1959. The PKI led a series of militant August 1951 strikes which were followed by clamp-downs in Medan and Jakarta, and the party leadership briefly went underground.