Russian airstrikes against, Russia asserts, Islamic State in Syria from an airbase in Iran were the first time in 70 years in which Russian forces have operated on Iranian soil. It’s major expansion in the collaboration among the regime of Syrian dictator Bashar al-Assad’s and his two main allies — Russia and Iran.
The Guardian noted that hosting Russian jets on Iranian territory is a major change by Tehran from its previous history of mostly just covert operations in regional conflicts.
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