UPDATE 5-Iran urges Syrians to talk after Tehran meeting

* Iran calls for talks between Syrian govt and opposition

* Meeting attended by 28 nations, Western powers sceptical

* Joint statement calls for three-month ceasefire

LONDON, Aug 9 (Reuters) - Iran urged Syrian rebels on

Thursday to start talks with President Bashar al-Assad about

political reform and said it won international support at a

meeting in Tehran for such a strategy to end the conflict.

The Iranian foreign minister insisted Assad's administration

- a key ally of Tehran - would not collapse under pressure from

abroad and the state broadcaster said a diplomatic gathering

attended by Russia, China, India, Jordan and a couple of dozen

other states had backed Tehran's call for a three-month truce.

With most countries represented only by their ambassadors

and the absence of Western and most Middle Eastern states which

have demanded Assad end his family's 40-year rule, analysts saw

little impact from the meeting on the continuing violence.

Afterwards, Iranian Foreign Minister Ali Akbar Salehi told a

televised news conference: "The opposition needs to sit down and

cooperate with the Syrian government to speed up the reform."

Without naming Western and regional powers which have backed

the rebels against Iran's ally Assad, he said: "It will be a

mistake to think that with the continuation of pressure and

unwise moves, the Syrian leadership would finally collapse.

"With such interference, they are worsening the crisis."

Iranian state television said nations who attended the

meeting issued a joint statement backing Iran's call for a

three-month ceasefire to allow for talks to take place.

No text was available but the broadcaster cited one element

of the statement, saying the meeting "welcomed Iran's suggestion

calling on the parties involved to halt the violence for three

months in order to follow up talks". It linked a ceasefire to

the end of the Muslim holy month of Ramadan in about 10 days.

The statement also included a clause expressing deep concern

over the fighting and loss of life and said that national

dialogue was the only solution, state television said.

U.N. STATEMENT

The Syrian government has said it is ready for dialogue but

the opposition says Assad must step down as a precursor to any

negotiations.

Continued hostilities in Aleppo, where the Syrian military

is bombarding rebel fighters, make talks unlikely in the near

future.

Also present at the Tehran meeting was the United Nations

resident coordinator to Tehran, Consuelo Vidal-Bruce, who read

out a statement from U.N. Secretary General Ban Ki-moon that

rebuked both government and opposition for relying on weapons to

win through violence.

"There will be no winner in Syria. Now, we face the grim

possibility of long-term civil war destroying Syria's rich

tapestry of interwoven communities," it said.

"We cannot let this prediction come true."

In an opinion piece published by the Washington Post on

Wednesday, Salehi warned there would be catastrophic

consequences if Assad fell from power.

"Syrian society is a beautiful mosaic of ethnicities, faiths

and cultures, and it will be smashed to pieces should President

Bashar al-Assad abruptly fall," it read.

While Salehi said Iran sought a solution that was in

"everyone's interest", 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 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.

"RUNNING OUT OF IDEAS"

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.

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 the recent signs of cracks in the Syrian

leadership have taken Iran by surprise.

"Iran is trying to show strength and regional presence,"

said Scott Lucas of the EA Worldview news website that

specialises in covering Iran. But he noted the timing of

Thursday's meeting seemed rushed, given that Tehran will host a

summit of the Non-Aligned Movement later this month.

"They seem to be so jittery about Syria, they couldn't

afford to wait," Lucas suggested.

Iran's Shi'ite Muslim rulers have accused Western and Sunni

Muslim-ruled Arab nations - specifically Tehran's regional rival

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 neighbouring

Turkey, which has hosted opposition meetings, extended

assistance to Syrian refugees and demanded Assad leave office.

"Iran wants to coordinate 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," he said of an informal

grouping involving Western and Arab powers and Turkey.