The Blinken has turned Iran-Russia relations into a major concern.
The US Secretary of State reiterated the claim that Iran is participating in the war in Ukraine by providing military assistance to Russia, and stated that there is a highly destructive relationship between Russia and Iran.
Russia also provides Iran with military equipment, including advanced fighter jets. This seems to be something that may be happening, and if Iran gains access to this technology, it will turn the country into an even greater threat.