Moscow, Beirut: Syrian government forces on Monday escalated their bombing campaign around Damascus, raining shells down on rebel territory and sending out a “bloody message” just days before renewed peace talks in Geneva.

Representatives from the opposition and of President Bashar Al Assad’s regime are to head to Switzerland on Thursday for another attempt to end their country’s brutal six-year war.

But regime forces on Monday escalated their bombing of the edges of Syria’s capital, according to the Syrian Observatory for Human Rights and activists on the ground.

“The toll in regime air strikes on (northern rebel district of Damascus) Barzeh has increased to seven people, including a woman and child,” the Observatory said, adding that 12 more had been wounded.

The Britain-based monitor said rockets also hit the northeastern opposition-controlled neighbourhood of Qabun overnight and into Monday morning.

Rebels and regime forces reached a local ceasefire deal in Qabun in 2014, but violence has built up in the neighbourhood since last week.

At least 16 people were killed on Saturday in government rocket fire on a funeral in Qabun, according to the Observatory.

“This is the third day of bombardment — rockets, artillery, mortars, and air strikes,” said media activist Hamza Abbas, speaking to AFP via internet from Qabun, where he said he could hear non-stop shelling.

“The bombardment is targeting three neighbourhoods — Qabun, Barzeh, and Tishreen,” Abbas said.

A Syrian military source contacted by AFP declined to comment on the operations.

Syria’s opposition on Sunday lambasted the government’s renewed bombing campaign around the capital, calling it a “bloody message” aimed at sabotaging the peace talks.

The High Negotiations Committee (HNC) said the attacks near Damascus and elsewhere across the country were “obstructing the efforts aimed at a political transition in Syria”.

“It is a bloody message from a criminal regime just a few days ahead of political negotiations in Geneva that demonstrates its rejection of any political solution,” the HNC said in an online statement.

The HNC — formed in December 2015 and which has emerged as the leading umbrella group for Syria’s opposition factions — has a new chief opposition negotiator for the Geneva talks, lawyer Mohammad Sabra.

He replaces Mohammad Alloush of the Army of Islam (Jaish Al Islam), a powerful rebel faction headquartered in the opposition bastion of Eastern Ghouta.

The district, which has faced a blistering army offensive in recent months, lies near opposition-controlled areas of Damascus that are being increasingly targeted by the government.

Al Assad’s regime is “bitterly determined to rid itself of the insurgent enclave, one way or another,” analyst Aron Lund wrote in a post for the Carnegie Endowment’s Middle East Centre.

“However weakened and contained, Eastern Ghouta remains a dagger pointed at the heart of Assad’s regime and it ties down many thousands of soldiers,” Lund said.

Overrunning the area could have a significant impact on peace talks “since no opposition delegation would be of much value” without the Army of Islam, Lund added.

Thursday’s talks in Switzerland will be the fourth round of UN-hosted peace negotiations, and Syrians caught in the six-year conflict did not have much hope for a political solution.

Radwan Al Homsi, a media activist in northwest Syria, told AFP that violence always increased after previous talks in Geneva in 2012, 2014, and 2016.

“This time around, just like any other conference, it will be just ink on paper,” Homsi told AFP in the town of Binnish.

“It’s actually the opposite — we’re now very scared of anything called a conference, because after every conference, there’s a military campaign,” the 27-year-old said.

Since the last round of talks in April 2016, rebels have lost their stronghold in east Aleppo and seen a new partnership form between their main ally Turkey and government backer Russia.

Ankara and Moscow teamed up in December to secure a truce deal between rebel groups and government forces, but the ceasefire is barely holding across Syria.

Along with regime ally Iran, they have hosted two rounds of talks between government officials and prominent rebels in the Kazakh capital.

More than 310,000 people have been killed and millions forced to flee their homes since Syria’s conflict broke out in 2011 with protests against Al Assad’s rule.

Meanwhile, a defence ministry statement quoted by Russian agencies said on Monday that four Russian military personnel were killed and two injured when their vehicle was targeted with explosives in central Syria last week.

“Four Russian servicemen died when their car exploded on a radio-controlled IED on February 16, 2017, in Syria,” the statement said. “Two more were injured. Russian military medics are trying to save their lives.”

“The convoy of Syrian army cars, in which the vehicle with Russian military advisers was travelling, was en route from the Tiyas airfield area toward the city of Homs,” it said.

“After they travelled four kilometres, a radio-controlled explosive was activated under the car with Russian servicemen.”

The four deaths raise the number of Russian military officially reported killed in Syria to 26 since it started its campaign in Syria in support of President Bashar Al Assad on September 30, 2015. Another soldier committed suicide.