The CEO of the 2020 Tokyo Olympics says security is his greatest concern but believes Japan will be safe from the kind of mass street protests currently overshadowing this summer¡¯s Rio de Janeiro Games.

¡°If I had to choose just one challenge from many it would have to be security,¡± Toshiro Muto told The Japan Times in an exclusive interview. ¡°There are many threats of terrorism in the world. It¡¯s not just a physical threat, but also the threat of cyberterrorism.

¡°The level of threat that terrorism poses gets more and more complicated each year. No one knows how sophisticated cyberterrorism will have become by 2020.