The Saudis, particularly the younger generation, are starting to tire of pricing oil in (and linking their currency to) the USD. The US gains a huge economic benefit in having effectively no exchange risk on their massive oil imports. But the Saudis have seen their economy overheat and suffered some serious devaluation in their reserves when the USD is shaky. China is the oil market of the future and they pay real cash on the nose. A quiet little transfer of nuclear technology on the side will be a nice sweetner to help close the deal.
Shooting attack reported in Jerusalem (Haaretz)
from the article: Terror without balance