The Portuguese Colonial War (), also known in Portugal as the Overseas War () or in the former colonies as the War of Liberation (), and also known as the Angolan, Guinea-Bissau and Mozambican War of Independence, was a 13-year-long conflict fought between Portugal's military and the emerging nationalist movements in Portugal's African colonies between 1961 and 1974. The Portuguese ultraconservative regime at the time, the , was overthrown by a military coup in 1974, and the change in government brought the conflict to an end. The war was a decisive ideological struggle in Lusophone Africa, surrounding nations, and mainland Portugal. The prevalent Portuguese and international historical approach considers the Portuguese Colonial War as was perceived at the time—a single conflict fought in the three separate Angolan, Guinea-Bissau and Mozambican theaters of operations, rather than a number of separate conflicts as the emergent African countries aided each other and were supported by the same global powers and even the United Nations during the war. India's 1954 annexation of Dadra and Nagar Haveli and 1961 annexation of Goa are sometimes included as part of the conflict. Unlike other European nations during the 1950s and 1960s, the Portuguese regime did not withdraw from its African colonies, or the overseas provinces () as those territories had been officially called since 1951. During the 1960s, various armed independence movements became active—the People's Movement for the Liberation of Angola, National Liberation Front of Angola, National Union for the Total Independence of Angola in Angola, African Party for the Independence of Guinea and Cape Verde in Portuguese Guinea, and the Mozambique Liberation Front in Mozambique. During the ensuing conflict, atrocities were committed by all forces involved. Throughout the period, Portugal faced increasing dissent, arms embargoes, and other punitive sanctions imposed by the international community, including by some Western Bloc governments, either intermittently or continuously. The independentist guerrillas and movements of Portuguese Africa were heavily supported and instigated with money, weapons, training and diplomatic lobbying by the Communist Bloc which had the Soviet Union as its lead nation. By 1973, the war had become increasingly unpopular due to its length and financial costs, the worsening of diplomatic relations with other United Nations members, and the role it had always played as a factor of perpetuation of the entrenched Estado Novo regime and the nondemocratic status quo in Portugal. The end of the war came with the Carnation