He sought the support of the Contadora group for his plan, which involved the removal of all foreign powers from the region, an end to aid for antigovernment guerrillas in El Salvador and Nicaragua, and the implementation of democratic principles and a compromise peace for social reconstruction.Arias's presidency saw the transformation of Costa Rica's economy from one based on the traditional cash crops (coffee and bananas) to one more focused on non-traditional agriculture (e.g., of exotic flowers and fruits) and tourism.[4] Arias received the 1987 Nobel Peace Prize with the help of John Biehl, his peer in England, and Rodrigo Madrigal Nieto for his work towards the signing of the Esquipulas II Accords.This was a plan intended to promote democracy and peace on the Central American isthmus during a time of great turmoil: leftist guerrillas were fighting against the governments in El Salvador and Guatemala, which were backed by the United States under the auspices of the Cold War; the Contras, supported by the United States, were fighting an insurgency against the Sandinista in Nicaragua; Honduras, only recently wresting political power from its military, was caught in the middle as a base for U.S. military forces; and on Costa Rica's other border, Panama faced the oppression of Manuel Noriega's military dictatorship.Arias challenged this at the Sala IV, the Constitutional Chamber of the Supreme Court of Justice of Costa Rica, which initially rejected his application in September 2000.[9] In 2009, the Supreme Court of Honduras issued an arrest warrant for Honduran President Manuel Zelaya because of violations of the constitution and laws.Arias presented a seven-point agreement, which calls for the return of Zelaya as president – a condition deemed unacceptable to the interim government.Subsequently, due to increasing difficulty in speaking over the course of several weeks, Arias went to the Philadelphia Ears, Nose and Throat Associates medical center in the United States on 20 May 2008, where it was determined that he had a nonmalignant cyst on his vocal cords.In 2017 Costa Rica's General Attorney office indicted Arias for the Crucitas case, a case in which former Environment Minister Roberto Dobles and Arias as president signed a 2008 decree ceding the Canadian company Infinito Gold control over a protected area near the Nicaraguan border known as Crucitas for gold mining and declaring it "national interest",[23] something that the Prosecution argued was illegal as protected areas cannot be granted for exploitation of any kind.[24] Also in 2019 psychiatrist and anti-Nuclear activist Alexandra Arce von Herold formally accused Arias of rape at the Public Ministry.