Moscow plans to aid Tehran to prevent economic damage with tacit support from Europe, the Israeli Foreign Ministry said.
According to the ministry, Russia and Iran have agreed on a mechanism to spare Iran the impact of what are intended by the US to be crippling sanctions on its oil industry from next month.
The mechanism provides for Iran to export crude oil to Russia across the Caspian Sea. The oil will then be refined at Russian refineries, and from there it will be exported worldwide, the "secret" Israeli document states, according to a report on Hadashot TV news.
In return, Moscow will provide Iran with unspecified trade and service benefits.
The goal of the mechanism, the reported Israeli document makes clear, is to enable Iran to bypass the US sanctions on its oil industry that are set to come into force on November 4.
The Russian-Iranian deal was reportedly reached last month in Tehran, where Russian President Vladimir Putin, Iranian President Hassan Rouhani, and Turkish President Recep Tayyip Erdogan held summit talks.
The Israeli document also reportedly warns that European states are ready to tacitly agree to let Iran continue to sell oil to various states in Asia, the Times of Israel reported.