U.N. Secretary General Antonio Guterres said Friday that Tokyo and the nearby port city of Yokohama are "very serious candidates" to host some of the U.N. functions slated for relocation.Speaking in an exclusive interview with Kyodo News in Osaka, Guterres also stressed that as the world's only country to have suffered atomic bombings in war, "Japan has the moral authority to be a strong leadership voice in relation to nuclear disarmament."The U.N. chief was in Osaka to attend the U.N. Special Day at the World Exposition. He also attended the ninth Tokyo International Conference on African …READ FULL ARTICLE