Vovinam and most developed in Vietnam with more than 60 schools around the world, including Poland, Belgium, Cambodia, Denmark, Germany, the United States, Morocco, Norway, Russia, France, Romania, Switzerland, Sweden, Singapore, Uzbekistan, Thailand, Italy, Australia, India, Iran, Spain, Algeria, Taiwan. The Chief of Vovinam Council now is Nguyễn Văn Chiếu. Vovinam is practiced with and without weapons. It is based on the "principle of between hard and soft". It includes training of the body as well as the mind. It uses force and reaction of the opponent. Vovinam also includes hand, elbow, kicks, escape- and levering techniques. Both attack and defense
Martial arts question of "which is the best martial art" has led to inter style competitions fought with very few rules allowing a variety of fighting styles to enter with few limitations. This was the origin of the first Ultimate Fighting Championship tournament (later renamed UFC 1: The Beginning) in the U.S. inspired by the Brazilian Vale tudo tradition and along with other minimal rule competitions, most notably those from Japan such as Shooto and Pancrase, have evolved into the combat sport of Mixed Martial Arts (MMA). Some martial artists compete in non-sparring competitions such as breaking or choreographed routines of techniques