promoting a radical form of socialism based on working class self-activity rather than vanguard parties and state planning. Until its 1976 Geneva Congress, the Socialist International (SI) had few members outside Europe and no formal involvement with Latin America. In the late 1970s and in the 1980s, the SI had extensive contacts and discussion with the two powers of the Cold War, the United States and the Soviet Union, about east–west relations and arms control, and admitted as member parties the Nicaraguan FSLN, the left-wing Puerto Rican Independence Party, as well as former Communist parties such as the Democratic Party of the Left of Italy and the Front for the Liberation of Mozambique (FRELIMO). The SI aided social democratic parties in re-establishing themselves when dictatorship gave way to democracy in Portugal (1974) and Spain (1975). After Mao Zedong's death in 1976 and the arrest of the faction known as the Gang of Four, who were blamed for the excesses of the Cultural Revolution, Deng Xiaoping took power and led the People's Republic of China to significant economic reforms. The Chinese Communist Party (CCP) loosened governmental control over citizens' personal lives and the communes were disbanded in favour of private land leases, thus China's transition from a planned economy to a mixed economy named as "socialism with Chinese characteristics" which maintained state ownership rights over land, state or cooperative ownership of much of the heavy industrial and manufacturing sectors and state influence in the banking and financial sectors. China adopted its current constitution on 4 December 1982. Chinese Communist Party General Secretary Jiang Zemin, Premiers Li Peng and Zhu Rongji led the nation in the 1990s. Under their administration, China sustained an average annual gross domestic product growth rate of 11.2%. At the Sixth National Congress of the Communist Party of Vietnam in December 1986, reformist politicians replaced the "old guard" government with new leadership. The reformers were led by 71-year-old Nguyen Van Linh, who became the party's new general secretary. Linh and the reformers implemented a series of free market reforms—known as ("Renovation")—which carefully managed the transition from a planned economy to a "socialist-oriented market economy". The Soviet Union experienced continued increases in mortality rate (particularly among men) as far back as 1965. Mikhail Gorbachev wished to move the Soviet Union towards of Nordic-style social democracy, calling it "a socialist beacon for all mankind". Prior to its dissolution in 1991,