John Coates set to host 2004 Games . And while the World Cup , which starts on June 12 may take priority , Brazil 's ability to juggle two huge events has been called into question . IOC vice-president says situation on the ground is `` critical '' Rio de Janeiro says state of preparation worse than Athens in 2016 . Brazil currently preparing to host 2014 Olympics .
John Coates set to host 2004 Games . IOC vice-president says situation on the ground is `` critical '' Rio de Janeiro says state of preparation worse than Athens in 2016 . Brazil currently preparing to host 2014 Olympics .