Xinhua News Agency Rio de Janeiro, July 5 sports news (reporter Ji Ye) at the Rio Olympics countdown to usher in a month on the occasion, the Brazilian National Public Security forces on the 5th officially took over Olympic venues security, and Brazilian Minister of Justice and Citizen Alexander Dermot Ryan Adams said that through a variety of information feedback, the Rio Olympic terrorist threat does not exist at present. On the security linkage program launching ceremony today in the Olympic Park, about 700 from ...