It has neither the technical know-how nor the industrial capability to build their own 4th generation jet fighter. Now, don't get me wrong, Israel could build up both, but that would cost somewhere waaay north of $100billion dollars. Does Bibi have that sort of cash just lying around?
Germany shelves Nazi crimes probe of US national Karkoc (AP)
from the article: In bid for air superiority, Israel may wait for better jets