State Department has designated Iran as the world’s biggest state sponsor of terrorism. We owe Iran nothing. As a retired diplomat, I say Blinken is full of shit. This is not the normal course of business. We don’t even have diplomatic relations with Iran.
We did, until they invaded our Embassy. There is a level of fake, but necessary, politeness in international relations. But Iran has been using proxies to attack us for decades, so they can @!&$ right off. No need for this message, just. Ignore it.