Trouble between Moscow and Tehran?

While the granting of the use of the Iranian airbase in Hamedan to the Russian Aerospace forces was greeted with a lot of coverage, the recent departure from Hamedan of the Russian Tu-22M3 has attracted much less attention. The official Russian line on this was very neutral, as shown by this article in Sputnik. What really took place, however, deserves some further scrutiny. First, it should be said that the