Tensions between Russia and Turkey have escalated dramatically in the past few weeks, so much so that direct military confrontation cannot be ruled out.
Under the cover of Russian air power, Assad’s forces have almost completely encircled Aleppo. Assad plans to repeat the siege-and-starve tactic he followed to regain control of Homs City is May, 2014. The coming siege has prompted some 150,000 residents to flee towards Turkey, which has closed its border to the refugees.
US-backed Syrian Kurds are hoping replicate the achievement of the Iraqi Kurds and forge a statelet along the Syro-Turkish border. YPG forces exploited the opportunity opened up by regime gains north of the city to seize territory held by Turkish-backed rebels near the border, including the Menagh Airbase. Ankara responded by shelling their positions; ignoring US calls for restraint. Moscow has been effectively supporting the YPG by conducting airstrikes on non-Kurdish rebels in the region.
Aleppo City is held by a motley collection of some fifty odd Turkish, Saudi and Qatari-backed rebel groups. Most of these groups are no more than neighborhood militias with dozens or hundreds of fighters. The biggest is Turkish-backed salafist outfit Ahrar al-Sham, which has tens of thousands of fighters and controls the strategically important Bab al-Hawa crossing, the only remaining line of communication into Aleppo.
Ahrar competes with Jabhat al-Nusra (JN) for leadership of the Aleppo rebels. JN controls the main water and power plant in the city and enjoys a degree of leverage over other groups. It has disarmed and absorbed at least three US-backed groups in the past year.
Both JN and Ahrar have a significant presence outside the city and are likely to survive and perhaps even make strategic gains as a result of the siege. Other US and Turkish-backed groups are at risk of annihilation and absorption by the big two. The same goes for the Saudi-backed Jabhat al-Shamiya and Jaysh al-Mujahideen.
That the loss of Aleppo would be a turning point in the proxy war is not lost on the Saudis. Mohammad bin Salman, the 30-year-old Deputy Crown Prince and Defense Minister, is “willing to take military, financial and political risks in order not to fall behind in regional politics,” according to German intelligence.
The Kingdom’s aggressive new foreign policy was on display in Yemen, where the Saudis rashly intervened to push the Houthis back to the hills and restore their man to the helm. It is on display again in Syria: Riyadh is deploying fighter jets to the southern Turkish airbase of Incirlik.
Turkey is considering a military intervention in northern Syria. This is not because Ankara has any illusions that it can put up a fight with Russia, with or without Saudi help. Turkey is counting on Article V of the North Atlantic Treaty which states that “an attack on one Ally shall be considered an attack on all Allies.” In other words, Turkey may be betting that the United States will deter Russia from directly attacking its Nato ally.
The situation is starkly similar to the July Crisis. Back then, German guarantees prompted Austria to attack Serbia, a Russian protectorate. Today, US guarantees may prompt Turkey to attack Syria, a Russian ally.
It is time to diffuse this dangerous confrontation. It would be extremely damaging to US credibility to back-off after the event. On the other hand, unlimited guarantees to Turkey could embroil the United States in a major military confrontation with Russia that would serve no conceivable US interest. The US needs to inform Turkey post-haste that the United States is not going to war to protect Turkish interests in Syria.