TOKYO -- Ever since the first modern Olympics in Athens in 1896, the quadrennial sporting extravaganza has had to overcome myriad woes -- from natural disasters and medical crises to wars and terrorist attacks.
Tokyo 2020 Olympics
The turbulent journey to the opening of Tokyo 2020
Japan's pandemic Games have faced myriad problems over the past decade
The Olympic logo on display in Tokyo on Thursday. (Photo by Yuki Kohara)
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