Which Israeli defense contractors build airplanes and tanks? Without aircraft and spares you cannot have a modern military. The US absolutely props up Israeli with weapons and military technology that they do not produce in country. Waving around nuclear weapons and a massive number of troops are the actions of states that are weaker then project as (Russia DPRK).
> Which Israeli defense contractors build airplanes and tanks?
Neither do the North Koreans [1][2]? (Caveats [3][4].)
America dropping Israel simply means it finds a new supplier. Russia is out of the picture, given its dependence on Iran, but China and India would be more than willing to supply.
Israel did use to build fighter jets. It built the Kfir. It planned to build a next gen airplane (The Lavi) but was pressured by the US to cancel that plan and instead buy F16s. The US also affects control of what Israeli weapons systems can be sold to who. Presumably part of the agreement to cancel the Lavi project was some sort of US commitment to supply Israel instead.