Santos has been a member of the Washington-based think tank the Inter-American Dialogue since 1990, and he previously served as co-chair of the Board of Directors. He was president of the Freedom of Expression Commission for the Inter American Press Association. A Fulbright visiting fellow at the Fletcher School of Law and Diplomacy at Tufts University in 1981, and a Nieman Fellow at Harvard University in 1988, Santos also holds an honorary Doctor of Laws degree. He was Minister of Foreign Trade of Colombia during the administration of President César Gaviria Trujillo from 1991 to 1994, Minister of Finance and Public Credit of Colombia during the administration of President Andres Pastrana Arango from 2000 to 2002. In 1992 he was appointed President of the VIII United Nations Conference on Trade and Development. In 1994 Juan Manuel Santos founded the Good Government Foundation, whose stated objective is helping and improving the governability and efficiency of the Colombian Government. This organization presented a proposal for a demilitarized zone and peace talks with the FARC guerrilla group. Juan Manuel Santos has been named as one of Time magazine's 100 most influential people. Universidade NOVA de Lisboa is granting the Honoris Causa Doctorate title to Juan Manuel Santos. Santos also founded the Social National Unity Party (Party of the U) to support the presidency of Álvaro Uribe. He was named Minister of Defence on 19 July 2006. During his tenure as Defence Minister, the administration dealt a series of blows against the FARC guerrilla group, including the rescue of Fernando Araújo Perdomo, the death of FARC Secretariat member Raúl Reyes (a controversial military raid on Ecuador's border), and the non-violent rescue of former presidential candidate Ingrid Betancourt held captive since 2002, along with fourteen other hostages, including three Americans. In 2008 the 'false positives' scandal was uncovered, referring to revelations concerning extrajudicial executions carried out by members of the military in order to artificially increase the number of guerrillas killed by the Army and claim rewards from the government. On 4 November 2008, Santos admitted that the military had carried out extrajudicial executions and he pledged to resolve the issue. Twenty-seven military officers, including three generals and eleven colonels, were sacked after an internal army investigation concluded that they were responsible for administrative failures and irregularities in reporting enemy casualties and operational results. The Commander of the Colombian National Army, General Mario Montoya, resigned. By May 2009, 67 soldiers had been found guilty and over 400 were arrested pending trial.