The problem that I see is that the US has been pestering Iran since the 1950s, including backing Saddam Hussein to go to war against them. The Iranians, however, are intelligent, motivated, have significant education, and a can-do attitude, which has gotten them contracts to supply weapons critical to a war fought by a former superpower.
While it sucks that Iran is selling to Russia and are also pestering several Middle East countries, I see continuing this way is like getting bogged in the mud and putting a brick on the gas pedal, digging in rather than working a way out. While one might say this applies to Iran, they live there, same as the Vietnamese the US also failed to overcome.
I presume the pestering will not stop no matter the futility of it all around.