Why does Japan still claim legendary Korean athlete Sohn Kee chung

You can watch this video at As we build up to another Olympics, its that time when we might naturally reflect on some of the legends of games gone by. The first ever Korean gold medalist was Sohn Keechung. The trouble is, his marathon victory at the 1936 Berlin Games is claimed by Japan, and its causing yet more controversy ahead of this summers Tokyo Games. Find out why the past continues to cast a long shadow.