The young African nation of South Sudan is facing two growing challenges: the coronavirus pandemic and ethnic violence. The dual threats mean little time or investment is left for athletes looking to compete in the Olympics -- so Japan, the host of the now-postponed 2020 Games, offered to help. NewsHour producer Ali Rogin reports on how five runners are training to keep their Olympic dreams alive. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders