Ah, here’s a timely article from today: U.S. official: Iran considers Saudi Arabia, not Israel, its enemy

Former U.S. ambassador Frederic Hof has revealed that Iranian officials, in private meetings, told him that Iran is not in conflict with the United States or Israel but rather believe Saudi Arabia to be the main threat considering its perceived tampering in Syria, Kuwait’s daily al-Rai reported
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According to Hof, one Iranian official told him that “neither the U.S. nor Israel intervened in Syria,” adding that the real problem was Saudi Arabia and to a lesser extent, Turkey.

Hof said that Iran believes Saudi Arabia to be Iran’s real enemy inside and outside Syria, and not Israel.

“Iran is concerned about the consequences of the sectarian and civil war in Syria, but Saudi Arabia will benefit from sectarianism in the region,” Iranian officials reportedly told Hof.