Imrich Lichtenfeld - the founder of Krav Maga - does not appear to have any formal asian martial arts roots that I can find. His bios state that he learned wrestling and grappling from his father, and later honed his skills fighting on the street. (wikipedia, kravmaga.com). Once he immigrated to Israel he joined the para-military forces and started teaching self-defense techniques.
During that same time Aikido was being developed by Morihei Ueshiba. He based Aikido off of his years practicing Daitō-ryū, Tenjin Shin'yō-ryū, Gotōha Yagyū Shingan-ryū, and Judo. (wikipedia) He continued to refine the art throughout the duration of his life.
I watched the video. These are the techniques I felt were similar to Aikido.
- Kotegaeshi - There were a number of examples of this
- Iriminage - Several examples which looked very rough.
- Nikyo - The angle was not good. It might have been nikyo.
- Sankyo? - At one point (After the supposed nikyo) it looks like he does a sankyo against his chest.
Looking at the techniques:
- Kotegaeshi is probably just a natural development of anyone experimenting with joint locks. There are only so many ways to bend the wrist.
- Iriminage in this video is akin to a close line, and it doesn't have the fluidity or grace of most Aikido styles I've seen.
- Those may be nikyo and sankyo, but again, there are only so many ways to hurt a wrist. They are probably variations on the same principles.
Because Imrich Lichtenfeld continued to evolve Krav Maga it is not impossible to say that Aikido may have eventually started to influence a few of the techniques, but there is nothing in his online biographies to suggest that. The two martial arts have very conflicting philosophies.
Krav Maga has a philosophy emphasizing threat neutralization, simultaneous defensive and offensive maneuvers, and aggression. wikipedia
Aikido is often translated as "the Way of unifying (with) life energy" or as "the Way of harmonious spirit." Ueshiba's goal was to create an art that practitioners could use to defend themselves while also protecting their attacker from injury. wikipedia