Krav Maga consists of a wide variety of techniques sourced from Aikido, Judo, Boxing, Wrestling, and Karate. Krav Maga is not a martial art, but instead, a self-defense system designed to be highly effective in real-world situations and easy to learn. The philosophy of Krav Maga emphasizes the use of aggression with the simultaneous application of defensive and offensive maneuvers. Most techniques involve a block with a counterattack to a vulnerable part of the body, such as the groin, eyes, or throat. Practitioners learn how to defend themselves against single and multiple attackers as well as attacks involving knives, firearms, and clubs. The primary goal of Krav Maga is to neutralize a threat quickly and decisively to create an opportunity for escape.