Rebel fighters man a checkpoint on an entrance to al-Rai town, northern Aleppo countryside, Syria December 25, 2016. (File photo. REUTERS/Khalil Ashawi) Rebel fighters man a checkpoint on an entrance to al-Rai town, northern Aleppo countryside, Syria December 25, 2016. (File photo. REUTERS/Khalil Ashawi)

Clashes, shelling and air raids in western Syria marred a Russian- and Turkish-backed ceasefire that aims to end nearly six years of war and lead to peace talks between rebels and a government emboldened by recent battlefield success. Russian President Vladimir Putin, a key ally of Syrian President Bashar al-Assad, announced the ceasefire on Thursday after forging the agreement with Turkey, a longtime backer of the opposition. The truce went into force at midnight but monitors and rebels reported almost immediate clashes, and violence appeared to escalate later on Friday as warplanes bombed areas in the country’s northwest, they said.

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The ceasefire is meant as a first step towards fresh peace talks, after several failed international efforts this year to halt the conflict, which began as a peaceful uprising and descended into civil war in 2011. It has drawn in the military involvement of world and regional powers, including Moscow and Ankara.

The agreement brokered by Russia and Turkey, which said they will guarantee the truce, is the first of three ceasefire deals this year not to involve the United States or United Nations.

Moscow is keen to push ahead with peace talks, hosted by its ally Kazakhstan, to end Syria’s conflict which has resulted in more than 300,000 deaths and displaced more than 11 million people, half its pre-war population.

Foreign Minister Sergei Lavrov and his Kazakh counterpart Kairat Abdrakhmanov discussed plans for the talks on Friday, the Russian ministry said.

But the first challenge will be maintaining the truce, which looked increasingly shaky on Friday.

Syrian warplanes carried out at least 16 raids against rebels in the northern Hama countryside, the Syrian Observatory for Human Rights said. Clashes between insurgents and government forces and their allies took place overnight along the provincial boundary between Idlib and Hama, the Observatory and a rebel official said.

Government forces and their allies meanwhile clashed with rebels near Damascus, and helicopter gunships carried out air raids in the area, the British-based Observatory reported.

An official from the Nour al-Din al-Zinki rebel group said government forces had also tried to advance in southern Aleppo province.

There was no immediate comment from the Syrian military on Friday’s clashes.

A number of rebel groups have signed the new agreement, Russia’s Defence Ministry said on Thursday. Several rebel officials acknowledged the deal, and a spokesman for the Free Syrian Army (FSA), a loose alliance of insurgent groups, said it would abide by the truce.

PREVIOUS COLLAPSES

The previous two Syria ceasefires, brokered by Cold War foes Washington and Moscow, took effect in February and September but both collapsed within weeks as warring sides accused each other of truce violations and fighting intensified.

Putin said the parties were prepared to start peace talks intended to take place in Astana. Syrian state media said late on Thursday those talks would take place “soon”.

The Syrian government will be negotiating from a strong position after its army and their allies, including Shi’ite militias supported by Iran, along with Russian air power, routed rebels in their last major urban stronghold of Aleppo this month.

Moscow’s air campaign since September last year has turned the civil war in Assad’s favour, and the last rebels left Aleppo for areas that are still under rebel control to the west of the city, including the province of Idlib.

In another sign that the latest truce could be as challenging to maintain as its predecessors, there was confusion over which rebel groups would be covered by the ceasefire.

The Syrian army said the agreement did not include the radical Islamist group Islamic State, fighters affiliated to al Qaeda’s former branch the Nusra Front, or any factions linked to those jihadist groups.

But several rebel officials said on Thursday that the agreement did include the former Nusra Front – now known as Jabhat Fateh al-Sham – which announced in July that it was severing ties with al Qaeda.

The powerful Islamist insurgent group Ahrar al-Sham said it had not signed the ceasefire agreement because of “reservations” but did not elaborate.

RUSSIA-TURKEY DETENTE

The deal also follows a thaw in ties between Russia and Turkey.

Talks on the latest truce picked up momentum after Russia, Iran and Turkey said last week they were ready to back a peace deal and adopted a declaration setting out principles for an agreement.

In a sign of the detente, the Turkish armed forces said on Friday Russian aircraft had carried out three air strikes against Islamic State in the area of al-Bab in northern Syria.

Ankara is backing rebels fighting against Islamic State, which has made enemies of all other sides involved in the conflict.

While Ankara has been a big sponsor of the rebellion, Assad’s removal has become a secondary concern to fighting the expansion of Kurdish influence in northern Syria. The chances of Assad’s opponents forcing him from power now seem more remote than at any point in the war.

Turkish demands that fighters from the Lebanese Hezbollah movement leave Syria may not please Iran, another major Assad supporter. Hezbollah has been fighting alongside Syrian government forces against rebels.

On Thursday a senior Hezbollah official said the party’s military wing would remain in Syria.

Hezbollah’s mission in Syria was to “confront the terrorist project”, Lebanon’s National News Agency quoted the head of Hezbollah’s political council, Sayyed Ibrahim Amin al-Sayyed, as saying.

UNITED STATES SIDELINED

The United States has been sidelined in recent negotiations and is not due to attend the next round of peace talks in Kazakhstan.

Its exclusion reflects growing frustration from both Turkey and Russia over Washington’s policy on Syria, officials have said.

The ceasefire, in the waning days of U.S. President Barack Obama’s administration, was the first major international diplomatic initiative in the Middle East in decades not to involve the United States.

Russia has said the United States could join a fresh peace process once President-elect Donald Trump takes office on January 20. It also wants Egypt to join, together with Saudi Arabia, Qatar, Iraq, Jordan and the United Nations.

Trump has said he would cooperate more closely with Russia to fight terrorism but it was unclear what that policy would look like, given resistance from the Pentagon and the U.S. intelligence community to closer cooperation with Russia on Syria.

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