TOKYO -- With just six months until the start of the Summer Olympics here, one of the biggest challenges to overcome involves the athletes themselves -- or the lack of them.
Tokyo 2020 Olympics
Tokyo Olympics confront new doubts with 6 months to go
Qualifiers, vaccinations and crowd size still up in the air as pandemic rages
The start of Japan's torch relay on March 25 is seen as a possible deadline for any decision to cancel the Tokyo Olympics. (Photo by Kai Fujii)
Read Next
Latest on Tokyo 2020 Olympics
