Japan tells youth athletes not to wear uniforms in Nanjing

(Reuters) - The Japanese Olympic Committee (JOC) has told its Youth Olympic Games athletes not to wear their official tracksuits when out and about in the host city of Nanjing in China due to fears over potential attacks.

Ties between China and Japan, the world's second- and third-largest economies, have been strained by a territorial row over a group of East China Sea islets and Chinese allegations that Japan has not properly atoned for wartime aggression.