Karate
The World Karate Federation (WKF) is the largest sport karate organization and is recognized by the International Olympic Committee (IOC) as being responsible for karate competition in the Olympic Games. The WKF has developed common rules governing all styles. The national WKF organizations coordinate with their respective National Olympic Committees.
Olympic sports
Previous Olympic Games included sports that are no longer included in the current program, such as polo and tug of war. Known as "discontinued sports", these have been removed due to either a lack of interest or the absence of an appropriate governing body for the sport. Some sports that were competed at the early Games and later dropped by the IOC, have managed to return to the Olympic program, for example Archery, which made a come-back in 1972, and tennis, which was reintroduced in 1988. The Olympics have often included one or more demonstration sports, normally to promote a local sport from the host country or to gauge interest in an entirely new sport. Some such sports, like baseball and curling, were added to the official Olympic program (in 1992 and 1998, respectively). Baseball was discontinued after the 2008 Olympics in Beijing, only to be revived again for the forthcoming 2020 Olympics in Tokyo, which will see the introduction of new disciplines within a number of existing Summer Olympics sports as well as several new sports, such as karate and skateboarding, making their Olympic debuts.