The 2016 Olympic Games officially start in Rio on Friday with the opening ceremony at the Maracana Stadium.
There will be 10,500 athletes from a record 207 teams competing in Rio, including the Refugee Olympic Team, while it will be the first time Kosovo and South Sudan have taken part in the Games.
A doping scandal involving Russian athletes has cast a shadow over the Games though a blanket ban on all Russian competitors was avoided.
