I believe Israel is preparing for a conflict, however when the conflict does start I believe the Iranians will never agree to a cease fire unless they feel significant pain and Israel's military can't do much damage to Iran unless they actually did the unthinkable. I believe the Israeli strategist would ignite a war knowing that Iran would drag the US in the war and if that happens Israel knows the outcome. The total destruction of the Iranian military but a lot of pissed off Americans blaming Israel for the cost of hundreds or possibly thousands of Americans lives and hundreds of billions of dollars not to mention Israeli gas prices $8,00 a gallon coming to the US.
Kremlin: Russian air strikes aimed at supporting Syrian army, target terrorists (Reuters)
from the article: Military strike on Iran is what unites Netanyahu and Barak