A good portion of the people in Iran want the regime to be taken out. Playing nice with them doesn't make them happy.
If you admit a lot of Iranians want the regime out (and are Pro-West) then why are you so quick to jump ship on this?
You can't change a country over night or in a year. We tried that with Afghans and Iraq and look at how that's shaping up.
The Mullahs aren't going to be in power forever.
Kim is doing what hes doing because of economics. Not because hes scared of Trump. A thriving North Korean economy helps solidify his power and position. Creates less chance of a coupe.
Iran deal to lift sanctions was about economics. Iran was bleeding their best minds in all fields to western countries left and right.