LISBON, PORTUGAL—Mario Soares, a former prime minister and president of Portugal who helped steer his country toward democracy after a 1974 military coup and grew into a global statesman through his work with the Socialist International movement, has died. He was 92.

Lisbon’s Red Cross Hospital said in a statement he died there on Saturday afternoon with his son and his daughter at his bedside. The hospital did not provide a cause of death, but Soares had been a patient since Dec. 13 and in a coma for the past two weeks.

Soares, a moderate socialist, returned from 12 years of political exile after the almost bloodless Carnation Revolution toppled Portugal’s four-decade dictatorship in 1974. As a lawyer, he had used peaceful means to fight the country’s regime, which eventually banished him.

Soares was elected Portugal’s first post-coup prime minister in 1976 and thwarted Portuguese Communist Party attempts to bring the NATO member under Soviet influence during the Cold War. He helped guide his country from dictatorship to parliamentary democracy and a place in the European Union.

“The loss of Mario Soares is the loss of someone who was irreplaceable in our recent history. We owe him a lot,” Socialist Prime Minister Antonio Costa said in India, where he was on a state visit.

Costa said three days of national mourning will begin Monday and that Soares would have a state funeral at an unspecified date.

“His cause was always the same: freedom,” President Marcelo Rebelo de Sousa said in a televised speech. “At decisive moments, he was always a winner.”

Soares’s role as an international statesman was solidified through his work with the International Socialist movement. As a vice-president from 1976, he led diplomatic missions that sought to help resolve conflicts in the Middle East and Latin and Central America.

In 1986, Soares became Portugal’s first civilian president in 60 years. His broad popularity brought him two consecutive five-year terms.

During terms as prime minister and foreign minister, Soares helped rehabilitate Portugal on the international stage after decades of isolation under the dictatorship established by Antonio Salazar in the 1930s. Soares’s insistence on using the ballot box instead of weapons to end the dictatorship won him respect around the world.

Soares belonged to a generation of influential European Socialist leaders that also included his close friend François Mitterrand of France, Germany’s Willy Brandt, Olof Palme in Sweden, and Felipe Gonzalez in Spain.

The 1974 coup shot Lisbon to the centre of Cold War attentions as Portugal lurched to the political left after the dictatorship’s fall.

Days after the Carnation Revolution — so named because people stuck red carnations in soldiers’ rifle barrels — Soares returned home by train from Paris to a rapturous welcome from crowds who flocked to meet him at Lisbon’s Santa Apolonia train station.

The Communist party’s influence surged following the coup, prompting fears in the West that Portugal — a founding member of the Atlantic military alliance — would come under Soviet influence and encourage other radical leftist movements in western Europe.

Portugal had Western Europe’s last colonial empire, and Soares was instrumental in quickly granting independence to Portugal’s five colonies in Africa. Protracted wars had sapped the Portuguese economy and soured its relations with other western nations that had turned away from colonial rule years earlier.

Soares later was criticized for cutting the colonies loose so abruptly. All of them — Angola, Mozambique, Guinea-Bissau, Cape Verde, and Sao Tome and Principe — became single-party Marxist states supported by the Soviet Union and Cuba after their independence. Angola and Mozambique drifted into civil wars as proxies in the Cold War struggle for influence in Africa.

After democracy, Soares served four times as the country’s foreign minister and three times as prime minister.

As prime minister in 1986 he ushered Portugal into the European Economic Community — later the European Union. That turned out to be a watershed year that placed the country on a fast-track modernization program.

Soares capped his political career that year by becoming head of state. He rapidly set about keeping his campaign pledge to serve as “President of all the Portuguese” after years of division and unrest that brought eight governments between 1978 and 1985.

He was a fierce critic of the economic liberalism embraced by U.S. president Ronald Reagan and British leader Margaret Thatcher that was alien to his socialist convictions about the benefits of welfare capitalism.

As president, Soares established a professional, if cool, relationship with centre-right Social Democratic prime minister Anibal Cavaco Silva, who admired Thatcher. Though an unlikely team, Soares and Cavaco Silva together oversaw the shedding of many left-inspired economic structures, such as the nationalization of banks, adopted after the coup.

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Opponents claimed Soares had abandoned his socialist ideals, but Soares insisted his “cohabitation” with Cavaco Silva contributed to the country’s new-found stability. He won a thumping re-election victory to serve a second five-year term in 1991.

He returned to politics in 1999, winning a seat in the European Parliament as the main candidate of the Socialist party but then failing to be elected head of the assembly.

He also ran again for Portugal’s presidency in 2006, at the age of 82. Younger voters had little grasp of his historic achievements and he finished third.