Technically anything that is not orginated from Asia is not a martial art.
first, I am not sure that you can say that that only systems coming out of Asia are martial arts, but even so, Israel is in Asia so technically that would fit the definition
I am not convinced that it is a martial art because I don't think it should be studied or treated as one. It lacks the spirituality factor of "martial arts" and it lacks the "lifestyle" aspect.
krav maga is a very effective system for fighting, and I am ot sure that it is anything more than that.
Usually a Martial Art is practiced for sport.
KM is orginated from Asian fighting styles and disciplines, but it adds more practicallity. Therefore, KM is not practiced to get points it is to defend and combat. There are no rules, no refs, no scoring on the streets it's all brutal combat that usually ends with someone half dead.
So yeah you are right it is not a Martial Art, more of a combat/defense system.