The recent negotiations prove that Trump only cares about oil/gas price stabilization to avoid economic catastrophe before mid-term elections (Republicans totally screwed in midterms). Now regime change is no longer the top priority. It was hubris and bad intelligence to believe that decapitation and mass protests can lead to quick regime change. It's time for Trump to declare victory with a defacto Iranian toll on straits and leave. Ground invasion is political suicide and very risky, and airpower-only strategy has failed again and again.