I do not see a way that we can dictate a unconditional surrender upon to Iran. The only time we attempted it with warring states other than the Confederacy were Japan and Germany in WWII. Even then, and even after dropping two nuclear weapons, with respect to Japan we were forced to agree to the condition of allowing the imperial institution to continue rather than risk the enormous casualties of a forceful entry into Japan. Germany only surrendered when some 10.4 million allied troops were physically occupying the country.Yes they did. The Civil War has zero parallels to the terrorist regime of Iran.
Hezbollah at Irans behest and others have been killing innocents for decades.
Grant and Lee fought with rules with uniforms. With exception of possibly Sherman they followed basic rules of war.
General Sherman should have been charged with war crimes against combatants in the south and the Lakota.
Iran has a population of 90 million people. We can not invade, occupy, and dictate a peace to a nation of that size with our current active force plus our reserves. To remind, Germany had a population of just 69 million at the start of WWII and the US alone deployed 69 combat divisions to Europe after D-Day.
As it has been true since the dawn of the airplane, it is a pipe-dream to believe that we could force such a capitulation through air power alone. Israel just recently proved it again in Gaza.
We need to focus on destroying their nuclear capability - period.