You can’t bully a country like that into doing what you want them to do.
They want sanctions lifted - the people on the street are suffering and the majority of people were born after the revolution, they have no part in it.
Iraq invaded them and they were on their own there, so they don’t trust anyone.
They are a Shia country and surrounded by other Muslim Sunni countries who view them as heretics. They have fought with America against Daesh - funny how they forgot that.
They are ruled by greedy crooks who get rich (as the wealthy and powerful often do at the expense of ordinary people) and they are stuck with them for the time being.
If ‘behaving like an international country’ means making up WMD lies, invading a country, bleeding it dry and leaving the nationals to the tender mercies of worse monsters, then they are doing just as bad as that now.
Trump is orchestrating this now to try to do a Thatcher with the Falklands. And he ain’t ‘doing what he said he would’ he is doing what he berated Obama for supposedly wanting to do.
If you want a sick ideology then look at trumps mates in the ME and Russia.