The Israelis and Saudis have already formed some kind of military bond to counter Iran...it’s coming...
The Russians are in a precarious spot here. If they decide to back Iran and the revolution wins, Trump will go for Syria next. Which means, Israel will do something with Lebanon so they could destroy Hezbollah. With Hezbollah out of the picture, attention could then be turned on Hamas, which is why the Saudis are on board.
Basically, regime change in Iran is the first step in a true mid-east peace plan.