Israel must remain vigilant on Middle East dynamics, pursue mutual interests with friend.As long as the ayatollahs’ regime exists, Iran will pose a challenge to Israel. We can’t talk anymore about “Arab Spring” but we are talking about a log winter.Some countries have disintegrated, and some, like Iraq, Libya and Syria, are in the process of failing. The world in general and the Middle East in particular have undergone tremendous changes, not all of which could be predicted. We have four primary dangers to Israel in the region. The first threat is the conventional one, which has clouded Israel since its inception, namely regular armies with air forces and the ability to stage ground maneuvers. The second one is the nuclear threat; the third one is terrorist and guerrilla groups and the last one is the cyber dimension. It’s a relatively new threat, but we have already seen its power.