The Saudis wanted to leave well enough alone in Egypt. Obama stirred up trouble against the Saudis' wishes. Egypt is too important to the Saudis to let it go sideways, so, ten billion Saudi dollars later, the Saudis have restored Egypt to stability.
The Saudis then noted that Qatar was attempting regime change in Iran's strategic client state, Syria. OK, thought the Saudis, if you like helping Sunnis overthrow regimes, then help us trim Iran's wings by getting rid of Assad. Obama said OK, so the Saudis pulled out all the stops, including threatening Putin to his face in his own dacha.
Well Obama doesn't follow through after failing to build a coalition and caving to Putin's sabre-rattling. Then Obama has the gall to start dancing with Iran as they continue to build a Bomb that could depose the Saudi royal family.
I see this as a lover's spat between Obama and the Saudis. Any fallout from this will be paid for by the U.S. taxpayer, of course.
By threatening Chechen terrorism during the upcoming Winter Olympics, KSA has badly overplayed its hand.