Trump will not intervene directly. All efforts will be through a third party.
Trump should deliver a strong statement of support for the Iranian demonstrators and put our Navy forces in the Persian Gulf on alert while Sarah Huckabee provides daily intel updates on the situation.
The mullahs will foam & roar, the WH press corps will freak out but it may well galvanize Iranians in the streets with the moral support of the U.S. that Obama withheld in 2009.