Here are some snippets from some filming that Salahuddin Muhammad (Hontai Hakkei Ryu Aikijujutsu) has been doing on some of the principles of applying internal method (aiki) to neutralize and counter waza such as kotegaeshi and nikkyo/nikkajo/kote zume. The video is a teaser for his upcoming DVD, but IMO it contains enough interesting information to be useful in its own right. Enjoy.