What does this mean? After Russia's public pressure for more money, Iran is Ahmadinejad is naturally feeling defensive. The whole ruse that Iran didn't pay the money to Russia for enriched uranium sounds bogus. The Iranians are neither stupid nor crazy. Of course they would pay. And if it was merely an matter of cash, the squeeze for more could have been made privately.
My suspicion is that Russia never intended to hand over the goods to Iran in the first place. They want to manufacture it and export it to other countries, to include Iran.
So that brings us back to the original question: what does this mean? Perhaps the Iranian military is not strongly controlled by Admadinejad. Perhaps a little taste of what we did to them, i.e., capturing the Iranian diplomats, helps set a boundary.
Can we be reasonably sure that the Iranians DON'T want a war with U.S. and Great Britain? Up until now, that has seemed the case. Of course, no one is talking about uranium enrichment now. That's probably the point of all this.