Alternate theories of self-defence, inspired by Ahimsa, build principles similar to theories of just war. Aikido, pioneered in Japan, illustrates one such principles of self-defence. Morihei Ueshiba, the founder of Aikido, described his inspiration as Ahimsa. According to this interpretation of Ahimsa in self-defence, one must not assume that the world is free of aggression. One must presume that some people will, out of ignorance, error or fear, attack other persons or intrude into their space, physically or verbally. The aim of self-defence, suggested Ueshiba, must be to neutralise the aggression of the attacker, and avoid the conflict. The best defence is one where the victim is protected, as well as the attacker is respected and not injured if possible. Under Ahimsa and Aikido, there are no enemies, and appropriate self-defence focuses on neutralising the immaturity, assumptions and aggressive strivings of the attacker.