The most successful boxing nation at the Paris Olympics has joined the new governing body that aims to keep the sport in the 2028 Los Angeles Games after years of turmoil outside the ring. The boxing federation of Uzbekistan, whose fighters won five of the 13 gold medals in Paris this year, is among four new members of World Boxing, said the Switzerland-based body that is trying to win formal recognition by the International Olympic Committee. The IOC has set a deadline of “early 2025” to work with a new governing body replacing the Russian-led International Boxing Association, which was banished from the Olympic movement last year.