Olympic rings are displayed in front of the national stadium in Tokyo
May 29, 2021, Tokyo, Japan - Olympic rings are displayed in front of the national stadium in Tokyo on Saturday, May 29, 2021. International Olympic Committee (IOC) has plan to require athletes' agreement for the risks of their health conditions including COVID-19 and heatstroke if they will attend the Tokyo 2020 Olympic Games. (Photo by Yoshio Tsunoda/AFLO)