Russia's President Vladimir Putin (R) shakes hands with his Iranian counterpart Hassan Rouhani at the welcoming ceremony during a summit of Caspian Sea regional leaders in the southern city of Astrakhan, September 29, 2014. REUTERS/Alexei Nikolsky/RIA Novosti/Kremlin Ali Larijani wore black during the Ashura days of Shia mourning for the Prophet’s grandson Hussein while attending the Valdai International Discussion Club’s October 23rd plenary ses­sion. But the mere fact that Iran’s powerful parliamentary speaker was on a panel with Russian Presi­dent Vladimir Putin must have been a cause for some cheer de­spite the religious gloom in Tehran.

So must Putin’s statements, which depicted the Islamic Repub­lic as an ally in “the fight against terrorism and radicalism.”

Is the emerging Tehran-Moscow axis, as on display in war-ravaged Syria, a tactical marriage of convenience or does it herald the emergence of a strategic alliance?

On the surface, the two powers have converging policy objectives which bring them closer to each other. The immediate goal is to prevent the collapse of Bashar As­sad’s regime in Damascus, to anni­hilate what remains of US-backed opposition groups in Syria and to bring about the total humiliation of the United States and its allies, thereby rolling back the post-Cold War American world order.

The axis may also be interested in perpetuating a low-intensity conflict in Syria, where the threat of the Islamic State (ISIS) not only legitimises its military presence but also can be used as a useful bo­gyman in the countries’ respective dealings with the United States and Europe.

To this end, Tehran and Mos­cow have devised a division of labour and a burden-sharing ar­rangement, which may help them achieve these common objectives despite their differing strategic im­peratives.

Russia's defense minister in Tehran Iranian media Russia has committed itself to providing badly needed air support for the Syrian regime and its allies and its warplanes are conducting daily air strikes against anti-regime rebels. Moscow has also stepped up arms deliveries to Damascus.

The Islamic Republic is provid­ing the boots on the ground, with a growing force of Islamic Revo­lutionary Guards Corps units de­ployed in Syria along with Leba­nese Hezbollah fighters and Shia militias from Iraq, Afghanistan and even Pakistan supporting the badly weakened Syrian army.

This arrangement minimizes Russian and Iranian losses, leaving the path of martyrdom and heav­enly rewards to the more expenda­ble Shia militias and irregular forc­es. However, it remains to be seen if these measures will be enough to allow the Tehran-Moscow axis to achieve its immediate objectives.

What if the axis’s initiatives are countered by increased external support to various opposition forc­es in Syria, by the United States, Turkey, Saudi Arabia and Qatar, something that’s already happen­ing to some extent?

To what degree are Tehran and Moscow willing to sustain their commitments in such a protracted war scenario?

Even if the immediate policy goals of the axis are reached, dif­ferences in strategic objectives in the medium and long term may cause tension between Tehran and Moscow. So would the increased manoeuverings of lesser characters on the Syrian chessboard, such as Assad.

Russia is likely to demand maxi­mum influence over Syria’s devel­opment in return for Moscow’s limited military engagement in that country. Russia may find it ex­pedient to sell out Iranian interests in Syria, if it manages to extract concessions from the United States on issues related to Syria or on a broader regional canvas.

Such action by Moscow would be consistent with Russian policy of using the Islamic Republic as a bar­gaining chip in its dealings with the United States.

Putin’s ludicrous claim that Mos­cow had been “deceived by the United States” with regard to Iran’s nuclear programme was a crude at­tempt at covering his government’s support for imposing UN Security Council sanctions on Iran while simultaneously extracting money and political concessions from Tehran in return for blocking even harsher resolutions against Iran.

The Islamic Republic’s political leadership is well aware of Putin’s cynical machinations. The July 14th nuclear agreement and the removal of crippling international sanctions have made Tehran less dependent on Russia and, at least in theory, provided Tehran with greater strategic manoeuverabil­ity in its dealings with Washington and Moscow.

Iran’s use of US air support in the recapture of Tikrit from ISIS in March and Moscow’s fear of greater Iranian-US military cooperation may have been one of the motives behind Russia’s military interven­tion in Syria.

Assad, for his part, has an interest in gaining greater independence from both Russia and Iran. By using the Russian benefactor, Damascus can reduce its total dependence on Tehran’s benevolence. That may cause some tension between Teh­ran and Moscow, with Supreme Leader Ali Khamenei and Putin both competing to be the master of Damascus.

For the time being, these mecha­nisms indicate a tactical coopera­tion between Tehran and Moscow rather than the emergence of a new strategic axis that could have critical repercussions in the Middle East.