Because US oil companies once had lucrative concessions in Arab countries, the US was historically neutral in regards to the Israeli/Arab country conflict.
It was only because of nationalizations and the 1973 desperation of Israel that the US wound up supporting Israel.
Israel used to have to buy French fighter jets.
[Israel used to have to buy French fighter jets.]
Until the eventual embargo by France.
That’s how the Nesher was born.
https://en.wikipedia.org/wiki/IAI_Nesher