Today I read a Japanese martial art magazine at Kinokuniya Bookstore in Uwajimaya. It reported a seminar on Systema, a Russian martial art system. It looked quite interesting. The seminar was about how to deal with multiple assailants. You start with figuring out how to position yourself in the best place when they are approaching. You then build on it by gradually adding one tool after another (such as one-hand parrying, one-hand punch, etc.) to deal with it better.