Trump has no options regarding Iran.
The former head of the Mossad's Iran unit, Dani Citrinovich:
Some people are telling Trump that the US needs another attack to force Iran to agree to the deal, but that will only make matters worse diplomatically, especially if infrastructure is targeted.
Trump hopes that a quick war will either topple the Iranian government or simply come out and declare victory, but in reality it will only lead to retaliation from Iran.