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An unidentified participant, looks on, in an international conference on Syria at a hotel, in Tehran, Iran Wednesday, May 29, 2013. Iran has expressed its support for an international conference to end the bloodshed in Syria. Iranian Foreign Minister Ali Akbar Salehi says Tehran "supports Geneva talks and U.N. efforts." Image Credit: AP

Syria’s uprising offered the possibility of a strategic defeat of Iran. In this scenario, Iran will be weakened by the collapse of Bashar Al Assad’s regime, its single Arab ally and a vital link to Lebanon’s Hezbollah militia. Isolated, Iran will become more vulnerable to international pressure to limit its nuclear programme. And as Iran’s regional influence fades, those of its rivals — US allies Turkey, Qatar and Saudi Arabia — will expand.

Instead, events in Syria are spinning in Iran’s favour. Al Assad’s regime is winning ground, the war has made Iran more comfortable in its nuclear pursuits and Iran’s gains have embarrassed US allies that support the Syrian uprising. What is more, Iran has strengthened its relationship with Russia, which may prove to be the most important strategic consequence of the Syrian conflict, should the US continue to sit it out that is.

Part of the US calculation in declining to intervene has been the assumption that Al Assad will inevitably fall. The US, apparently, did not consider the implications of leaving the door open to a comeback by Al Assad. Reinforced by Hezbollah fighters and armed with Iranian and Russian weapons, the Syrian army broke through rebel lines in the central city of Al Qusayr last week. The symbolic victory has dashed hopes for a quick end to the regime or a diplomatic resolution to the fighting.

Syria is now a proxy war, the outcome of which will determine the regional pecking order. In the Mideast, the aura of power decides strategic advantage. Hezbollah’s prowess in Syria is a blow to Saudi Arabia, which has supported Hezbollah’s political opponents in Lebanon. The Syrian army’s gains are a setback to the Saudis, Qataris and Turks, all of whom have backed the rebels with money and weapons.

The US has withheld lethal aid, not to mention military action. The Barack Obama administration has eschewed intervention in Syria as a slippery slope to full-scale war, a costly repeat of the Iraq fiasco. In making this case, however, the administration sends a strong signal that it also will not go to war against Iran, despite Obama’s statement that no option is off the table when it comes to stopping Iran from acquiring nuclear weapons. When US officials say their options for intervention are constrained by Syria’s air defence systems, they are also saying they fear Iran’s.

If there was once a realistic hope that Syria’s civil war would isolate Iran, that prospect has dimmed. Russia has assumed all along Al Assad could win and thanks to Iran’s support, that now looks like a realistic outcome. Having already absorbed the wrath of Arab public opinion for supporting the ruthless leader, Russia has little reason to switch sides. By sticking with Al Assad, Russia projects the image of a steadfast ally that does not bend to international pressure, in contrast to the US, which appears to want to wash its hands of the region and pivot away to Asia.

Russia’s nominal support for international pressure on Iran’s nuclear programme notwithstanding, the two countries have long cooperated in the Caucasus and Central Asia to shape regional politics and minimise US influence. Common ground on Syria is deepening their relationship. The longer the Syrian conflict draws out, the closer this alliance will grow.

Russia shares Iran’s fear of the rising Sunni tide sweeping across the Arab world. This trend, Kremlin officials think, will fuel Islamic radicalism in Russia’s Muslim regions. They see Syria through the prism of the war in Chechnya and fault Turkey, Qatar and Saudi Arabia for supporting Sunnis first in the Caucasus and Central Asia and now in the Middle East. They see themselves fighting alongside Iran, against America’s allies, in a war against Sunni radicals.

If successful in Syria, the Russian-Iranian bloc will seek greater influence in new areas, such as the Gulf. It is worth noting that Russia invited Bahrain’s Shiite opposition party, Al Wifaq, to visit Moscow in February.

The US may be content to leave the Middle East and its troubles behind, but that feeling will be short-lived if the legacy of its Syria policy is a region dominated by an aggressive Russian-Iranian axis.

— Washington Post

Vali Nasr is a Bloomberg View contributor, dean of the Paul H. Nitze School of Advanced International Studies at Johns Hopkins University, a nonresident fellow at the Brookings Institution and the author of The Dispensable Nation: American Foreign Policy in Retreat.