�scar Arias Sánchez won the Nobel Peace Prize in 1987 for his
part in ending the Central American crisis of the 1970s and 1980s.
He is largely credited with convincing other Central American
powers to sign the Esquipulas Nicaraguan Peace Agreement which
helped end the multiple civil wars in the region. He was president
of Costa Rica from 1986 to 1990 and from 2006 to 2010.