I found the following on a forum today:
“I was thinking over knife attacks and I can't think of an effective Krav counter for this one - The attacker holds the knife in the oriental hold, but instead of stabbing upward he twists the knife to attack the side of the rib cage.”
You’re not going to be able to go to “the book” and find a technique for every particular situation. That’s why Krav Maga is a system of principles and not techniques. "Krav Maga training focuses on principles rather than techniques because no two attacks are ever the same."
Anytime you’re involved in a confrontation, look at it like a pool game (pocket billiards). Every time you shoot a game of pool, the balls are not going to line up the same way. You’re going to make shots that you have probably never made before. The shots may look the same, but they are off just a fraction of an inch. As in pool, you need to understand the underlining principles. Then you’ll be able to improvise like a Jazz musician and suit the scene perfectly.