WRAPUP 1-Syrian rebels hit back at Assad's air power

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* Turkey will press on with calls for 'safe zones'

* Russia says Assad cannot cease fire unilaterally

By Dominic Evans

BEIRUT, Sept 1 (Reuters) - Rebels seized an air defence facility and attacked a military airport in eastern Syria on Saturday, a monitoring group said, hitting back at an air force on which President Bashar al-Assad is increasingly relying to crush his opponents.

The attacks in eastern oil-producing Deir al-Zor province follow rebel strikes against military airports in the Aleppo and Idlib areas, close to the border with Turkey.

Syria's leader, battling a 17-month-old uprising in which 20,000 people have been killed, has lost control of rural areas in northern, eastern and southern regions and has resorted to helicopter gunships and fighter jets to subdue his foes.

The aerial bombardment has driven fresh waves of refugees into neighbouring countries, reviving Turkish calls for "safe zones" to be set up on Syrian territory - appeals ignored by a divided U.N. Security Council and by Western powers reluctant to commit the military forces needed to secure such zones.

Rebels in Deir al-Zor overran an air defence building early on Saturday, taking at least 16 captives and seizing an unknown number of anti-aircraft rockets, said Rami Abdulrahman of the British-based Syrian Observatory for Human Rights.

Video posted on the Internet by activists showed the officers and soldiers captured by the rebel fighters, and Al Arabiya television broadcast footage of what it said were rockets and ammunition seized in the raid.

Abdulrahman said rebels also attacked the Hamdan military airbase at Albu Kamal, close to Syria's eastern border with Iraq, but did not succeed in breaking into it.

The attacks come three days after rebels attacked the Taftanaz air base in Idlib province, where they said several helicopters were damaged. The insurgents also said they have shot down a fighter jet and a helicopter last week.

AIR STRIKES

Assad's forces have made numerous air strikes on civilians in rebel-held parts of Syria. Helicopters have strafed towns with heavy machineguns, and jets have unleashed rockets and bombs against opposition strongholds.

Bombardments of northern towns such as Azaz and Anadan, of which Assad lost control weeks ago, have led to thousands of residents fleeing to safety in Turkey.

Ankara made its call for safe havens inside Syria after the U.N. refugee agency said the flow of Syrians into Turkey and Jordan - which already host more than 150,000 registered refugees - was rising sharply.

But a ministerial meeting of the U.N.

"The insurgents also said they have shot down a fighter jet and a helicopter last week.AIR STRIKESAssad's forces have made numerous air strikes on civilians in rebel-held parts of Syria"Security Council produced nothing beyond a French plan to channel more aid to rebel areas, an initiative which will do nothing to stem the flow of civilians fleeing the fighting.

Turkish government sources said Ankara would again push for agreement on safe zones inside Syria at the U.N. General Assembly later this month and would try to put pressure on Russia and Iran, which strongly oppose any such action.

Prime Minister Tayyip Erdogan, a former ally of Assad, showed his frustration at the lack of international action.

"We cannot take such a measure unless the United Nations Security Council decides in favour of it ... First a decision for the no-fly zone must be taken, then we would be able to take a step towards a buffer zone," Erdogan said in an interview broadcast on Turkish television late on Friday.

"Bashar al-Assad has come to the end of his political life. At the moment, Assad is acting in Syria not as a politician, but as an element, an actor, of war," he said.

RECORD DEATH TOLL

A United Nations official said 1,600 people were killed in Syria in the last week, the highest weekly figure in nearly a year and a half of conflict, and aid agencies say living conditions are worsening dramatically.

An estimated 1.2 million people are uprooted within Syria, including 150,000 in Damascus and surrounding areas, according to the United Nations.

U.N. Secretary-General Ban Ki-moon said he had pressed the Syrian government to allow in international aid workers, and received a positive reply during talks in Tehran this week.

Ban told Reuters he had "long and in-depth discussions with the Syrian officials" on the sidelines of a Non-Aligned Movement meeting.

"While I criticised all the parties that have been depending on military means to resolve this issue, the primary responsibility rests with the Syrian government," he said.

But Russian Foreign Minister Sergei Lavrov said it would be wrong to press Damascus alone to end the violence.

"It is absolutely unrealistic to say that the unilateral capitulation of one of the parties in conflict is the only way out, in a situation when there's ongoing urban fighting," he told students of the Moscow Institute of Foreign Relations.

Algerian diplomat Lakhdar Brahimi replaced Kofi Annan on Saturday as the U.N.-Arab League mediator trying to end the war. Ban said he lobbied governments at the Tehran summit to support Brahimi, but he did not say how the negotiating strategy might change under the new mediator.

Brahimi's efforts will rely to some extent on a six-point plan that was promoted, so far unsuccessfully, by Annan, Ban said. The plan envisages a U.N.-supervised ceasefire, prisoner releases by the Syrian government and other steps.

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