Why is Oscar arias Sanchez famous?

Óscar Arias Sánchez is famous for serving as the President of Costa Rica twice, from 1986 to 1990 and from 2006 to 2010. He is best known for his efforts in promoting peace and democracy in Central America during the 1980s, particularly for his role in the Central American peace process. In recognition of his contributions, he was awarded the Nobel Peace Prize in 1987. Additionally, Arias is recognized for his advocacy of human rights and sustainable development.