The New York Times reports Effort to Rebrand Arab Spring Backfires in Iran. The article is about a conference held in Tehran about the "Arab Awakening.":  

The Tehran conference coincided with fresh signs of division between Iran and other Muslim countries. On Sunday, Turkey hosted a conference of the Syrian opposition, whose members denounced Iran’s assistance in the Syrian government’s crackdown on protesters. And on Tuesday, a Saudi delegation walked out of a pan-Islamic conference in Indonesia, after a former speaker of Iran’s Parliament, Nateq Nouri, said the Saudi monarchy was corrupt and oppressive. (Needless to say, there were no Saudis at the Tehran conference.)
The Iranian effort to hold up the struggle against Israel as a crucible of Islamic unity comes across to many Arabs as doctrinaire and shopworn, no matter how strongly they sympathize with the Palestinian cause.
The cast of characters presiding over the Tehran conference — seated at a table on the stage — seemed strangely removed from the events of the past year: gray-bearded clerics, a former prime minister of Iraq, and aging Islamist leaders from Hezbollah and a Palestinian faction.  

The point of the article is that despite the growing Islamization of the Middle East, fewer of those Sunni countries wish to associate with  Shi'ite Iran.

Charles Krauthammer writes in Syria: It’s not just about freedom that the Sunni-Shi'a split should be exploited:

It’s not just the Sunni Arabs lining up against Assad. Turkey, after a recent flirtation with a Syrian-Iranian-Turkish entente, has turned firmly against Assad, seeing an opportunity to extend its influence, as in Ottoman days, as protector/master of the Sunni Arabs. The alignment of forces suggests a unique opportunity for the West to help finish the job.
How? First, a total boycott of Syria, beyond just oil and including a full arms embargo. Second, a flood of aid to the resistance (through Turkey, which harbors both rebel militias and the political opposition, or directly and clandestinely into Syria). Third, a Security Council resolution calling for the removal of the Assad regime. Russia, Assad’s last major outside ally, should be forced to either accede or incur the wrath of the Arab states with a veto.
Force the issue. Draw bright lines. Make clear American solidarity with the Arab League against a hegemonic Iran and its tottering Syrian client. In diplomacy, one often has to choose between human rights and strategic advantage. This is a rare case where we can advance both — so long as we do not compromise with Russia or relent until Assad falls.