We have killed Arabs in defence of our people and our nation. It is not only necessary, it is expected. Other than the small number of partisans, we did not kill in self-defence in Europe during WWII. Look what happened. The rabbi is only stating the obvious. We are a warrior nation and we survive.
One student killed, three wounded at Arizona campus during fight (a)
from the article: Settlement rabbi arrested on suspicion of incitement to racism