DUBAI - Iran hosts a foreign ministers' conference on Thursday to seek a resolution to the intensifying conflict in Syria but its latest diplomatic foray into the crisis has been met with deep skepticism by Western nations.Iranian President Mahmoud Ahmadinejad has billed the meeting of a dozen unnamed countries as an opportunity "to replace military clashes with political, indigenous approaches to settle the disputes," but there are doubts over the attendance of key players involved the crisis.Along with Russia and China, Iran has strongly supported Assad whose forces have launched crushing operations against anti-government protesters and armed opposition groups since the crisis erupted 17 months ago.The Islamic Republic has resisted an agreement on Syria that requires Assad to quit as part of any political transition. There is no sign that Tehran is ready to adopt a new approach, despite setbacks for Assad including the defection this week of his prime minister.But analysts say signs of cracks in the Syrian leadership have taken Iran by surprise."Iran is trying to show strength and regional presence, but if they were going to make a big play why not do it at the Non-Aligned Movement summit (taking place in Tehran in late August)?" said Scott Lucas of the EA Worldview news website that specialises in covering Iran."They seem to be so jittery about Syria, they couldn't afford to wait," he added.AccusationsIran's Shi'ite rulers have accused Western and Arab nations - specifically Sunni-ruled Saudi Arabia - of fomenting terrorism in Syria by arming opposition groups.In turn, Syria's mostly Sunni Muslim rebels accuse Tehran of sending military personnel to Syria and of providing light arms, as well as tactical and communications expertise to Syrian government forces.The crisis has soured Iran's relations with neighboring Turkey which has hosted opposition meetings, extended assistance to Syrian refugees and demanded Assad leave office."Iran wants to co-ordinate efforts among countries that don't accept the Western and Saudi approach to Syria," said Mohammad Marandi of Tehran University. "It's a counter-force to the so-called Friends of Syria gathering."Iranian involvement in the crisis has been complicated by the seizure by rebels of 48 Iranians in Syria on Saturday on suspicion of being military personnel. Tehran has said they were pilgrims, but acknowledged that some of the men were retired soldiers or Revolutionary Guards.Iranian officials have engaged in intensive diplomatic efforts in the region this week.On Tuesday, while Foreign Minister Ali Akbar Salehi was in Ankara trying to maintain relations, the head of Iran's Supreme National Security Council Saeed Jalili was in Damascus to reassure Assad of Tehran's support."They're in chaos in terms of the bureaucracy. There have been lots of statements but no-one's co-ordinating it," said EA Worldview's Scott Lucas.The meeting comes just days before a meeting of the Organisation of Islamic Cooperation set to focus on Syria. In recent days Iran has warned the Muslim world of the threat posed to it by the United States."In the new plan that the Americans have provided for the Middle East, they have foreseen changes for all countries," Iran's state news agency quoted Ahmadinejad as saying on Wednesday."I am certain they have plans for changes in Saudi Arabia as well they do not want Muslim countries to have power and in opposition we must stand together more than before," he added.Those attending would be countries with "a correct and realistic position" on the Syrian conflict, a senior Iranian diplomat said this week, indicating that no pro-opposition nation would be present.It was unclear which nations would attend but Western diplomats have dismissed the conference as an attempt to divert attention away from bloody events on the ground and to preserve the rule of Syrian President Bashar Assad."The Islamic Republic's support for Assad's regime is hardly compatible with a genuine attempt at conciliation between the parties," said one Western diplomat based in Tehran.It showed Iran was "running out of ideas", he added. Another Western diplomat said Tehran was trying to broaden the support base of the Syrian leader.