Netanyahu has been calling on 'outside help' (i.e legitimisation) for nearly 20 years. His speech to the US congress in 1996, his speech to the US congress in 2015. They are on youtube.
You really think that when one side gains ascendancy in the middle east, be it a Shia led Iran or a Sunni lead Saudi Arabia, or some other godforsaken conglomerate, that he or Israel is going to sit back and say 'Shalom, welcome to our border sworn enemy'? After the Muslims are finished killing themselves 'occupied Palestine' is next. If you can't see that you are blind.
Why is he so keen on destroying Irans posible nuclear capability? It's not because he's worried about Iran starting it, it's because he's worried about retaliation.
Of course, you are right, they might just sit around holding hands singing Kumbaya. But I doubt it..