@BeretInParis, this article goes into more about why Russia won't lift a finger to help Iran, including an aspect I hadn't considered - Ukraine.
https://www.cnbc.com/2025/06/23/russia-watches-on-as-ally-iran-is-pummeled.html
“Iran has massively supported Putin’s war against Ukraine with weapons and technology. On his trip to Moscow, Iran’s foreign minister Abbas Araghchi may now ask Moscow to return the favour,” Holger Schmieding, chief economist at Berenberg Bank, said in a note Monday.
“However, Putin has probably little to offer beyond some words. He needs his weapons himself for his continued aggression against Ukraine,” he noted.
Russia also has to tread a fine line between placating and assisting ally Iran and keeping the U.S. sweet, as it looks to re-establish ties with Donald Trump’s Russia-friendlier administration.
“If Putin were to annoy Trump over Iran in any significant way, Trump may change tack and impose new heavy sanctions on Russia and/or weaken Putin’s position in other ways,” Schmieding said.
The whole article is worth a read, by the way.
I need to offer a correction to something I posted earlier. Russia is now sourcing missiles and artillery shells from North Korea, not China, as far as we know. I think I just had China on my mind as I was getting ready to write about it and Iran.
I find it interesting that there's been no response from Iran yet to the American strikes. It makes me wonder if their options are so unattractive that they can't pick one.