TEHRAN, Iran — The politics of the Middle East are undergoing rapid changes, as demonstrated by recent developments in Turkey's domestic and foreign policies. These shifts will undoubtedly impact the regional and foreign policies of Turkey's neighbors, in particular those of Iran. For Tehran, the two primary factors are Turkey’s decision to redefine its ties with Israel and Russia and the diminishing of Ankara’s power as a key player in the Middle East and a rival of Iran.

These days, Iran sees itself as Russia's strategic partner in the Middle East. Of importance, the two countries are supporting the same side in the Syrian war. “Neither West nor East” remains part of the Islamic Republic's lexicon, but Russia has always enjoyed a better position in the country relative to the United States and other Western powers. In this vein, increased military cooperation between Moscow and Tehran is evidence of how important this partnership is for Iran. This month, the Islamic Republic for the first time allowed Russia to conduct military air operations from one of its air bases, perhaps a show of Tehran’s wish to maintain its pivotal position in Moscow's regional policies.

As some have recently argued, Iran's allowing Russia to use its Hamedan air base can be considered a message to its opponents in Syria, such as Turkey, who are attempting to court Russia. Indeed, Iran wants to signal that while Russia might talk to different players about Syria, such as Turkey and the United States, at the end of the day, it is Iran that Russia views as trustworthy. This bottom line has been lost amid the storm of criticism from Iranian lawmakers and negative public opinion about the sorties from Hamedan that led Tehran to announce Aug. 22 that Russian military operations from Iranian soil had been halted.

Although Iran and Russia have supported Syrian President Bashar al-Assad since the war in Syria erupted, their red lines in the country do not fully overlap. Ali Akbar Velayati, who serves as foreign policy adviser to the supreme leader, Ayatollah Ali Khamenei, had previously stated that keeping Assad in power is Iran's red line in Syria. In contrast, Russia's red line is maintaining the regime but not necessarily Assad. As such, the Turkey-Russia rapprochement, in the context of Ankara distancing itself from the West, may cause concerns in Iran about the possibility of a Turkish-Russian deal on Assad's fate.