Gadi Taub sets out 6 possibilities:
1. No real change.
2. False Reform of the regime
3. Real Reform of the regime
4. Regime change
5. Quagmire. Afghanistan or Vietnam redux
6. Occupation: South Korea redux
Gadi describes the options starting at 21:00.
Michael Doran gives some interesting takes and counters after that. He does not see any role for the Pahlavi family, the last Shah’s son in particular.
He describes the massive fortified tunnels through Iran — underground two-lane highways— that will make it difficult to impossible to completely degrade.
Michale and Gadi describe themselves as “classical liberals”. Wikipedia describes them, of course, as “right wing”.
If you want the views of the Left then go to any of the mainstream media, like CNN, BBC, MSNBC, New York Times, Haaretz. Bearing in mind that in all cases their views and analyses will be coloured by self-admitted TDS. (aka “anything Trump does.. it’s bad”).