Putin has given a green light:

The Kremlin has finally ( 14:30)  got around to posting the full Russian text of the press conference; there is still no official English text.

Putin also reveals that he arranged with Netanyahu not to hit the Bushehr reactor where there are 200 Russians at work: "We have agreed," Putin said at the presser, "with the leadership of Israel, which will ensure their security."

Finally, according to this Q&A:

"K.Talby: The second part of my question It also concerns Iran. There is a Strategic Partnership Agreement between Russia and Iran. It does not provide for the protection of Iran from the outside by Russia, but still there is a question of weapons.