People, please wake up. Systema is a fake. It doesn't work. Show this video to any of your friends who has ever gone boxing (kick-boxing, etc.)
All good martial arts are the same in different countries, althought they have different names, terms, the uniform.
Special forces don't use anything secret in their technique. All elements are simple, well-known, tested many times.
A lot of instructors like to tell that their martial art is used for special forces training. But it is only an advertisement statement.