Roberto Guareschi's works are published worldwide by Project Syndicate.  He has founded and is the director of a postgraduate course for editors in Argentina under Fundacion Carolina (Spain's cultural agency for Latin America) and two top local universities.  Guareschi is a visiting professor at the Graduate School of Journalism, UC Berkeley; former international editor of Clarin, the largest paper in all Spanish speaking countries and former executive editor of the same. During his tenure (1990-2003) Guareschi led the first complete redesign of the paper; Clarin reached its largest of 555,000 copies on weekdays and 1,050,000 on Sundays. Clarin also won many awards during that period: "King of Spain" twice (the most important one for investigative journalism in Spanish), a "Visa D'Or" at the Perpignan photojournalism festival.  In 1997 he received the Konex prize for journalism, a prestigious Argentinean award given every 10 years.