Well taken point and I agree.
In terms of Putin's Kremlin, it's a rerun of the Soviet period when one reviews 'old Soviet client states, such as Syria still being equipped with Russian weapons of all sorts.
The Iranian dilemma due to the extremely unstable nature of the jihadist régime is made far worse since Moscow is giving Tehran the ability to at least attempt to counter the inevitable military showdown, which may very well involve naval conflict in and around the geostrategic petroleum sea-lanes of the Strait of Hormuz.
In fact the Tor-M1 is an advanced anti-aircraft system that can identify up to 48 targets and fire at two targets simultaneously, at altitudes of up to 6,000 meters.
Both Iran & Syria continue infiltrating trained Islamist killers into Iraq and have murdered our troops, that alone is more then justified reasoning for a monumental pay back.
It was Iran behind the murders of 231 Marines in Lebanon.