"Regarding the F-35, I had a long conversation with Secretary of State Marco Rubio, who reiterated his commitment that the United States will continue to preserve Israel's qualitative military edge in everything related to supplying weapons and military systems to countries in the Middle East," Netanyahu said in a Hebrew-language interview widely circulated on X. 

Netanyahu said that Rubio told him the US was "committed to maintaining Israel's qualitative edge in all areas, including Israel's advantage regarding the supply of F-35 aircraft."

Netanyahu's comment emphasizes Rubio as an apparent advocate for maintaining Israel's military superiority over that of other US allies in the region. His comments would be in keeping with previous diplomatic engagement. 

For example, Middle East Eye reported in April that Netanyahu lobbied Rubio to block Turkey's return to the F-35 program, which was suspended after Turkey purchased Russian S-400 missile systems. Turkey is a member of NATO.

Trump pledged that Saudi Arabia and Israel would be treated as equal partners when it comes to the F-35. He appeared to reference Israeli lobbying to sell Saudi Arabia an inferior product to Israel's. 

"You are asking me, is it the same? I think it's going to be pretty similar," Trump said in an Oval Office meeting with Crown Prince Mohammed bin Salman on Monday. "I know they [Israel] would like you to get planes of reduced caliber. I don't think that makes you too happy… I think they [Saudi Arabia and Israel] are both at a level where they should get top of the line."

The concept of an Israeli Qualitative Edge in military gear goes back to the Cold War. In 1979, the US brokered a peace treaty between Israel and Egypt, then the Arab world's dominant military power, alongside the Shah's Iran. Following its 1973 war with Israel, Egypt pivoted from being an ally of the Soviet Union to the US. Egypt's peace with Israel was underwritten by the promise of US military aid, which Israel wanted to ensure was inferior to the weapons it received. 

Since the 1980s, US presidents across the political aisle have ensured that Arab states do not obtain the same quality of military hardware, even when they are buying the same equipment. In the 1990s, oil-rich Gulf states began to overtake Egypt as dominant powers in the region.