WanJeonHan taekwondo is variation of traditional taekwondo that also incorporates Judo throws, weapons training, self-defense, and joint locks. The sponsoring organization for WanJeonHan-style taekwondo is the National Taekwondo Association (NTA, not to be confused with the National Taekwon-do Association or the United States National Taekwondo Association). Like the American Taekwondo Association (ATA), the NTA is a franchise organization, though with far fewer franchises. See also the Wikipedia article: (Choson).