"The Saudis have declared their readiness for the Israeli Air Force to overfly Saudi air space in route to attack Iran if an attack is necessary," an unnamed senior European diplomat was cited as saying by Israel's Channel 2 News.

The source added that Saudi Arabia is "completely coordinated with Israel on all matters related to Iran."

The one condition Riyadh reportedly had for providing this kind of assistance is some kind of tangible progress in the Israeli-Palestinian peace process.

The report, if credible, is a major blow to the Obama Administration, which insists that Israel's urgent criticism of its proposed deal with Iran is unwarranted.

"Anybody running around right now jumping in to say, 'Well we don't like the deal,' or this or that, doesn't know what the deal is," US Secretary of State John Kerry told a congressional hearing on Tuesday.  IsraelNews