Ismail pursued aggressive and revolutionary domestic and foreign policies. At home, the People's Democratic Republic of Yemen adopted a Marxist-Leninist scientific socialism as the official state ideology. All major industries were nationalized and collectivized, universal suffrage was implemented, and a quasi-cult of personality was developed around Ismail and the NLF, renamed the Yemeni Socialist Party in 1978. His government helped establish Marxist paramilitary organizations around the Arabian Peninsula, PFLOAG and PFLO, which used political activism and violence to campaign against the Western-aligned Arab monarchies on the Persian Gulf. Under Ismail, South Yemen gave its most direct support to the later of these two groups during the Dhofar Rebellion in neighbouring Oman, providing advisors to the insurgent forces there, in addition to ensuring the transit of Warsaw Pact and Chinese weapons to the rebels. He also encouraged Communist guerrillas in North Yemen, seeking to destabilize the regime of Ali Abdullah Saleh and bring about Yemeni unification under a Communist government based in the South. This antagonism toward the North would stoke tensions between the two Yemens, eventually culminating in a brief series of border skirmishes in 1972.