Iran has such a radical regime because its democratically elected government was overthrown by USA long time ago. The same way Palestinians are so radical against Israel after decades of abuses. If you interfere in another people land for your own interests the only to expect from the other side is fanaticism and radicalization, that is how it is. Iran needs to stop being interfered by USA politics, to be able improve little by little. You can't expect a government to calm down if you are pressuring them non stop from all sides, and that's what USA wants. But after police killed that girl and killing more and more people in demonstrations, people living in poverty, I have little hope for Iran.