He is praised for winning the Nobel Peace Price in 1987 as a reward for shepherding to completion the so-called Esquipulas II peace agreement, which became known as the Arias Plan. The pact laid the basis for the downfall of the Sandinista government in Nicaragua, the disarming of the Farabundo Marti National Liberation Front (FMLN) guerrillas in El Salvador, and the coming to power in both countries of governments closely aligned with Washington.
The product of one of Costa Rica’s richest coffee-growing families, Arias, 68, got his start as an advisor to President Jose “Pepe” Figueres. The founder of the Party of National Liberation (PLN), Costa Rica’s leading party, Figueres came to power after winning a civil war in 1948 in which he led a rebel army that joined the country’s rightists and social democrats against the army and militias organized by the Stalinist Popular Vanguard Party, which was allied with a conservative bourgeois government.
Figueres’s “liberal” anti-communist credentials won him support and funding from the CIA. He worked closely with the long-time agent Cord Meyer in setting up Latin American front organizations.
Arias, who succeeded Figueres as the leader of the PLN, was first elected president in 1986. A year later, he was credited with Esquipulas II’s ratification by the presidents of five Central American countries and awarded the Nobel Prize.
The only two other surviving signatories of the pact—Nicaragua’s Daniel Ortega and Guatemala’s Vinicio Cerezo—have hotly disputed the credit given to Arias, charging that there was no “Arias Plan,” and that the initiative had been taken by Cerezo before Arias was even elected president.
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http://www.wsws.org/articles/2009/jul2009/aria-j11.shtml