Any Moscow-Ankara-Tehran alliance will be a fractious one, however.
Turkey is still a member of NATO -- it has the second largest army in the alliance -- and its military is largely reliant on the U.S. for its equipment. NATO needs Turkey, although the Turks have mixed feelings about the alliance. A poll taken a year ago found only 30 percent of Turks trusted NATO. The post coup polls may be worse, because it was the pro-NATO sections of the military that were most closely tied to the putsch.
Iran's Shiite government is wary of Erdogan's ties to the Sunni Muslim Brotherhood and Ankara's close relations with Iran's major regional nemesis, Saudi Arabia. The Russians also have a tense relationship with Iran, although Moscow played a key role in the nuclear agreement between the U.S. and Teheran, and Iran calls its ties with Russia "strategic."
The Saudis look like losers in all this. They -- along with Turkey, France, Britain, and most the Gulf monarchies -- thought Assad would be a push over. He wasn't, and five years later some 400,000 Syrians are dead, three million have been turned into refugees, and the war has spread into Turkey, Lebanon, Jordan, Iraq and Saudi Arabia.
The Yemen war has predictably turned into a quagmire, and even Saudi Arabia's allies are beginning to edge away from the human catastrophe that the conflict has inflicted on Yemen's civilian population. The United Arab Emirates, which provided ground forces for the Saudis, is withdrawing troops, and even the U.S. has cut back on the advisers assigned to aid the kingdom's unrestricted air war on the rebel Houthis. U.S. Defense Department spokesman Adam Stump said aid to Riyadh was not a "blank check," and several U.S. Congress members and peace groups are trying to halt a $1.15 billion arms sale to Saudi Arabia.
In military terms, the Yemen war -- like the Syrian war -- is unwinnable, and Washington is beginning to realize that. In fact, were it not for the U.S. and British aid to the Saudis, including weapons resupply, in-air refueling of war planes, and intelligence gathering, the war would grind to a halt.
The Saudis are in trouble on the home front as well. Their push to overthrow Assad and the Houthis has turned into expensive stalemates at a time when oil prices are at an all-time low. The Kingdom has been forced to borrow money and curb programs aimed at dealing with widespread unemployment among young Saudis. And the Islamic State has targeted the kingdom with more than 25 attacks over the past year.
Ending the Yemen war would not be that difficult, starting with an end to aid for the Saudi air war. Then the UN could organize a conference of all Yemeni parties -- excluding the IS and al-Qaeda -- to schedule elections and create a national unity government.
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