Iran says that not only are Germany, France, and Great Britain not doing enough to satisfy the demands it’s made as a quid pro quo for staying in the nuclear weapons deal.  All of the EU must pay some vig.  Here’s Iranian Foreign Minister Javad Zarif:

With the exit of the United States from the nuclear deal, the expectations of the Iranian public towards the European Union have increased….

That’s one mindset; unfortunately, it’s not unique to Iran: we exist, therefore, you owe.

Here’s another Iranian mindset:

The cascade of decisions by EU companies to end their activities in Iran makes things much more complicated[.]

The EU must take concrete supplementary steps to increase its investments in Iran. The commitments of the EU to apply the nuclear deal are not compatible with the announcement of probable withdrawal by major European companies[.]

Iranian businesses are completely under the control of the Iranian government.  Therefore, the companies of other nations must be controlled by those nations’ governments.  Those nations’ companies, therefore, must be required by their respective government masters to do business with Iran (through companies in Iran).

And this mindset from Germany’s Foreign Minister, Heiko Maas:

Giving it up means entering a completely uncertain future as far as the question of nuclear weapons in Iran is concerned.

It’s not really about Iran; it’s about our own original security interests, German as well as European.

Because not paying the vig would make Iran angry.  The EU wouldn’t like Iran when it’s angry.

Oh yeah, there’s one more mindset in play here.  Iran knows the mindset of the European signatories to the Iran nuclear weapons deal and how desperate those nations are to keep on Iran’s good side.  Iran is playing on that desperation to extort more goodies in return for Iranian pretty words of compliance.