Dr. Dennis Hanover, 10th Dan and Doctor of Martial Arts, has changed the lives of tens of thousands of children, women and men in Israel and other countries. Hisardut Dennis Survival Ju-Jitsu, the unique martial arts technique Dr. Hanover developed, which harmoniously integrates Judo, Karate and Ju-Jitsu, has given countless students the physical skills for effective self-defense, and the moral and spiritual courage to bring out their inner strengths.