Krav Maga is known for its focus on real-world situations and extremely efficient and brutal counter-attacks. It was derived from street-fighting skills developed by Hungarian-Israeli martial artist Imi Lichtenfeld, who made use of his training as a boxer and wrestler while defending the Jewish quarter against fascist groups in Bratislava, Czechoslovakia in the mid-to-late 1930s. In the late 1940s, following his immigration to Israel, he began to provide lessons on combat training and developed the system that became known as Krav Maga. It has since been refined for civilian, police and military applications.
Krav Maga has a philosophy emphasizing threat neutralization, simultaneous defensive and offensive maneuvers, and aggression. To be successful, Krav Maga requires some special and very intensive physical training with special equipment, including, but not limited to a punching bag.
Krav Maga is used by both regular and special forces, and several closely related variations have been developed and adopted by law enforcement and intelligence organizations of Israel. There are several organizations teaching variations of Krav Maga internationally.  
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