Rio Olympic Games: Concern about violence in host city
Two weeks before the opening ceremony of the Olympic Games in Brazil, the man in charge of security has told the BBC the threat of a terror attack is his "overwhelming concern."
An extra 80,000 security personnel have been brought in to patrol the streets of Rio de Janeiro and the stadiums - amid concern that the country is a soft target for criminals.
BBC Brazil correspondent Wyre Davies reports from Rio de Janeiro.
20 Jul 2016