If anyone scuttled those “negotiations”, it was the Saudis. The Saudis are fearful of a vibrant nuclear armed Iran which would be the most serious long term threat to the Saudi royals. In addition to Shi’ite/Sunni historic conflict, the Iranian mullahs are fond of preaching that the decadent Saudi royals are unfit guardians of Islam’s most holy sites. Ironically Israel and Saudi Arabia are de facto allies against Iran. Neither trust trust the United States. Obama has made it clear he has no intention of ever attacking Iran. These “negotiations” are a political fig leaf for American domestic consumption. If Israel attacks Iran, it will receive covert financial, logistic and intelligence support from the Saudis. A new strategic reality is evolving in the Mideast.
The alliance was announced some time ago. Before that, the Saudi’s declared that Israeli planes could use the fields at I believe Al Batin.
The Saudis have AWACS. The air battle will be observed and directed from over the Gulf by the Saudi AWACS.
Further, although the IDF does the bombing, Saudi and Qatari fighters will clear the way and provide cover.