VENEZUELA - FEBRUARY 27:  Iranian President Mohammad Khatami listens as Venezuelan President Hugo Chavez speaks at the official opening ceremony of the G-15 conference in Caracas, Venezuela, Friday, February 27, 2004. Venezuelan police and soldiers fired tear gas and rubber bullets at opponents of President Chavez as they marched through the center of Caracas.  (Photo by David Rochkind/Bloomberg via Getty Images)