Over the past several years, we have observed an increasing rapprochement between Russia and Iran in different areas - political, geostrategic, military, economic, trade and transport. It is not only notable at the level of rhetoric; it is also being expressed in concrete steps. However, we see that a series of visits by Russian delegations to Tehran have produced limited results. What could this be connected with? How can one explain the distance that still exists between the two countries?