From VOA:
Saudi Arabia has joined other Gulf Arab states in cautiously welcoming a nuclear deal reached by their regional rival Iran and a group of world powers.
In a statement issued Monday, the Saudi government said the agreement "could be" a first step toward a comprehensive solution to the Iranian nuclear dispute, "provided there is goodwill."
http://www.voanews.com/...
One of the loudly trumpeted objections to the nuclear accord has been that savvy regional Gulf states, chiefly Saudi Arabia, would agree with the characterizations made by Israeli and American Likudniks (viz., that we are duped, that the Iranians are 'masters of deception,' etc. etc.), denounce the agreement as foolish, and commence a regional arms race.
But in the latest challenge to the increasingly inadequate aginners' playbook, Saudi Arabia (perfidious Arabs, huh?) has looked at the first-stage agreement and made its decision, which is undeniably something of a breakthrough.