1/16Former heavyweight World boxing champion Muhammad Ali (L), gives advices to Vietnamese young boxers when he visits their training center in Hanoi, Vietnam on May 12, 1994. Ali, once convicted for refusing to serve in the US military during the Vietnam War, arrived on May 10, for a five-day goodwill visit aimed at helping resolve the MIA issue. (Photo by HOANG DINH NAM / AFP) Forrás: AFP/Hoang Dinh Nam