Russia understands that an attack on Iran by Israel will set the Middle East on fire, so that Russian interests will be hurt. Against this threat, all Russia needs to do is to say that if Israel attacks Iran Russia will destroy the Dimona facility. Russia should tell Israel it is too small to move the world in idiosyncratic directions. This will be most beneficial to the Israelis themselves.
Wounded Israelis in suspected car-ramming attack in West Bank are soldiers (Haaretz)
from the article: Lieberman: International community can stop Iran's nuclear program