Reuters International

A general view shows a damaged street with sandbags used as barriers in Aleppo's Saif al-Dawla district, Syria March 6, 2015. REUTERS/Hosam Katan/File Photo

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By John Davison and David Brunnstrom

BEIRUT/PARIS (Reuters) - Syrian government forces and their allies fought insurgents near Aleppo on Monday and jets carried out raids around a nearby town seized by Islamist rebels, a monitoring group said, despite international efforts to reduce the violence.

The United States and Russia, who support rival sides in the civil war, said they would work to revive a February "cessation of hostilities" agreement which reduced fighting in parts of the country for several weeks.

U.S. Secretary of State John Kerry said all parties had to press the sides they back to turn "words on a piece of paper" into actions to reinstate the truce.

Warplanes struck the town of Khan Touman, southwest of Aleppo, the British-based Syrian Observatory for Human Rights said. Rebels also fought government forces east of Damascus, and jets hit the rebel-held towns of Maarat al-Numan and Idlib.

A recent surge in bloodshed in Aleppo, Syria's largest city before the war, wrecked the 10-week-old, partial truce sponsored by Washington and Moscow which had allowed U.N.-brokered peace talks to convene in Geneva.

The talks, attended by delegates from President Bashar al-Assad's government and the opposition including representatives from rebel groups, broke up last month with both sides accusing the other of killing the truce.

Russia and the United States said in a joint statement they would step up efforts to persuade the warring parties to abide by the ceasefire agreement.

"We have decided to reconfirm our commitment to the (ceasefire) in Syria and to intensify efforts to ensure its nation-wide implementation," they said. "We demand that parties cease any indiscriminate attacks on civilians, including civilian infrastructure and medical facilities."

Visiting Paris, Kerry said a reduction of violence in line with the U.S-Russian joint statement depended on field commanders as well as interested parties including the United States.

"These are words on a piece of paper. They are not actions," he said. "We have a responsibility to make certain that the opposition lives up to this, and Russia and Iran have a responsibility to make sure the Assad regime lives up to this."

Basma Kodmani, a member of the opposition High Negotiations Committee, expressed hope of a return to the Geneva peace talks if the U.S.-Russian agreement is swiftly implemented.

STRATEGIC PRIZE

Russia's military intervention last September helped Assad to reverse some rebel gains in the west of the country, including in Aleppo province.

But insurgents captured the town of Khan Touman last week, inflicting a rare setback on government forces and allied Iranian troops who suffered heavy losses in the fighting. Several Iranian soldiers were captured in the clashes, a senior Iranian lawmaker said on Monday.

Aleppo city is one of the biggest strategic prizes in a war now in its sixth year, and has been divided into government and rebel-held zones through much of the conflict.

The Observatory said warplanes struck rebel-held areas of the city early on Monday, and rebels fired shells into government-held neighbourhoods.

Al Manar, the television channel of Damascus's Lebanese ally Hezbollah, said on Monday troops had destroyed a tank belonging to insurgents and killed some of its occupants.

On the eastern edge of Damascus, government forces and their allies shelled rebel areas and clashed with insurgents, the Observatory and the rebel force Jaish al-Islam said. Three people were killed and 13 wounded in air strikes on Idlib, it said.

Jaish al-Islam agreed with a rival rebel group, Failaq al Rahman, that both would vacate a town they have been fighting over for almost two weeks, the Observatory said.

The groups, two of the strongest operating in the area, agreed to make no more attempts to occupy the town of Misraba in the Eastern Ghouta suburb of Damascus, and return it to civilian rule. After 13 days of heavy artillery exchanges, Jaish al Islam took control of the town over the weekend, capturing around 50 rival fighters.

Saudi Arabia condemned air strikes on a camp for displaced Syrians west of Aleppo last week which killed at least 28 people, saying it was part of "the genocide committed by Bashar al-Assad's forces against civilians in Syria".

A Saudi cabinet statement on Monday said the strikes on the camp, alongside the prevention of humanitarian aid deliveries to Syrians, constituted war crimes. Damascus has denied targeting the camp or obstructing aid deliveries.

French Foreign Minister Jean-Marc Ayrault, hosting a meeting in Paris of Assad's opponents, said Syrian government forces and their allies had bombarded hospitals and refugee camps. "It is not Daesh (Islamic State) that is being attacked in Aleppo, it is the moderate opposition," he said.

The U.S.-Russian joint statement said Moscow would work with Syrian authorities "to minimize aviation operations over areas that are predominantly inhabited by civilians or parties to the cessation".

It also said the two powers would press the rival parties to the conflict to ensure humanitarian deliveries to several towns which have been largely cut off by the fighting.

(Additional reporting by Lisa Barrington in Beirut, Geert De Clercq in Paris, Sylvia Westall in Dubai and Tom Miles in Geneva; Writing by Dominic Evans; Editing by Peter Graff and David Stamp)

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