The US and Russia could drive the world into a global war if the conflict in Syria is not resolved, Turkey has warned.

Tensions have become increasingly heightened between Washington and Moscow in recent weeks. Last week, the US and UK warned Russia and its ally the Syrian government that new economic sanctions could be imposed if the bombing of Syria's besieged Aleppo continues.

On Sunday, Russia condemned Washington for making “unprecedented” threats of cyber attacks following accusations by the Obama administration that Moscow had hacked computers belonging to American political organisations.

US suspends bilateral relations with Russia over Syria

Turkish deputy prime minister Numan Kurtulmus said: "If this proxy war continues, after this, let me be clear, America and Russia will come to a point of war," the Daily Mail reports.

He suggested the Syrian conflict could be the beginning of World War Three, saying it had put the world "on the brink of the beginning of a large regional or global war".

Earlier this month a Russian newspaper warned that Russian President Vladimir Putin is playing an "astonishingly risky game" in the Syrian conflict that could lead to a Third World War.

Popular tabloid, Moskovsky Komsomolets, ran an article that suggested hostilities in Syria could spark a “direct military confrontation" between the nations of a similar scale to the 1962 Cuban Missile Crisis.

In pictures: Russian air strikes in Syria Show all 19 1 /19 In pictures: Russian air strikes in Syria In pictures: Russian air strikes in Syria Syrian boys cry following Russian air strikes on the rebel-held Fardous neighbourhood of the northern embattled Syrian city of Aleppo Getty In pictures: Russian air strikes in Syria Russian defense ministry spokesman Major General Igor Konashenkov speaks to the media in Moscow, Russia. Konashenkov strongly warned the United States against striking Syrian government forces and issued a thinly-veiled threat to use Russian air defense assets to protect them AP In pictures: Russian air strikes in Syria Syrians wait to receive treatment at a hospital following Russian air strikes on the rebel-held Fardous neighbourhood of the northern embattled Syrian city of Alepp Getty In pictures: Russian air strikes in Syria Russian Deputy Defense Minister Anatoly Antonov speaks at a briefing in the Defense Ministry in Moscow, Russia. Antonov said the Russian air strikes in Syria have killed about 35,000 militants, including about 2,700 residents of Russia AP In pictures: Russian air strikes in Syria Jameel Mustafa Habboush, receives oxygen from civil defence volunteers, known as the white helmets, as they rescue him from under the rubble of a building following Russian air strikes on the rebel-held Fardous neighbourhood of the northern embattled Syrian city of Aleppo Getty In pictures: Russian air strikes in Syria Civil defence members rest amidst rubble in a site hit by what activists said were airstrikes carried out by the Russian air force in the town of Douma, eastern Ghouta in Damascus, Syria Reuters In pictures: Russian air strikes in Syria A girl carrying a baby inspects damage in a site hit by what activists said were airstrikes carried out by the Russian air force in the town of Douma, eastern Ghouta in Damascus, Syria Reuters In pictures: Russian air strikes in Syria Civilians and civil defence members look for survivors at a site damaged after Russian air strikes on the Syrian rebel-held city of Idlib, Syria Reuters In pictures: Russian air strikes in Syria Civilians and civil defence members carry an injured woman on a stretcher at a site damaged after Russian air strikes on the Syrian rebel-held city of Idlib, Syria Reuters In pictures: Russian air strikes in Syria Volunteers from Syria Civil Defence, also known as the White Helmets, help civilians after Russia carried out its first airstrikes in Syria In pictures: Russian air strikes in Syria The aftermath of Russian airstrike in Talbiseh, Syria In pictures: Russian air strikes in Syria Smoke billows from buildings in Talbiseh, in Homs province, western Syria, after airstrikes by Russian warplanes AP In pictures: Russian air strikes in Syria Russian Air Forces carry out an air strike in the ISIS controlled Al-Raqqah Governorate. Russia's KAB-500s bombs completely destroy the Liwa al-Haqq command unit In pictures: Russian air strikes in Syria Caspian Flotilla of the Russian Navy firing Kalibr cruise missiles against remote Isis targets in Syria Â© TASS/ITAR-TASS Photo/Corbis In pictures: Russian air strikes in Syria Russia claimed it hit eight Isis targets, including a "terrorist HQ and co-ordination centre" that was completely destroyed In pictures: Russian air strikes in Syria A video grab taken from the footage made available on the Russian Defence Ministry's official website, purporting to show an airstrike in Syria In pictures: Russian air strikes in Syria A release from the Russian defence ministry purportedly showing targets in Syria being hit In pictures: Russian air strikes in Syria Russia launched air strikes in war-torn Syria, its first military engagement outside the former Soviet Union since the occupation of Afghanistan in 1979. Russian warplanes carried out strikes in three Syrian provinces along with regime aircraft as Putin seeks to steal US President Barack Obama's thunder by pushing a rival plan to defeat Isis militants in Syria In pictures: Russian air strikes in Syria Caspian Flotilla of the Russian Navy firing Kalibr cruise missiles against remote Isis targets in Syria, a thousand kilometres away. The targets include ammunition factories, ammunition and fuel depots, command centres, and training camps Â© TASS/ITAR-TASS Photo/Corbis

Russia's military announced on Monday that Russian and Syrian forces would halt hostilities for eight hours in the eastern districts of Aleppo.

It did not include any promises of an extended cease-fire and followed a bloody day of air strikes on rebel-held districts in and around the city.

The Britain-based Syrian Observatory for Human Rights said at least 50 civilians, including 18 children, were killed in air strikes on the eastern part of the city in the 24 hours before the Russian announcement.

Monday's air strikes coincided with the launch in neighbouring Iraq of a major operation by Iraqi and Kurdish forces, backed by the US-led coalition, to retake the northern city of Mosul from the so-called Islamic State group.

Mr Kurtulmus announced on Monday that Turkey is ready for hundreds of thousands of refugees from Mosul if the operations fuels sectarian violence.

"If the Mosul operation is handled correctly, there won't be a refugee wave into Turkey," Mr Kurtulmus told a news conference in Ankara.

Girl cries out for father after Syrian airstrike

"[But] if something goes wrong in Mosul, hundreds of thousands will put their migrant bags on their backs, they will be miserable and worn out, and come with their belongings to the only place they can go to, which is Turkey," he said.

The United Nations refugee agency said up to 100,000 Iraqis may flee to Syria and Turkey to escape the assault on Mosul, a city of 1.5 million people where Isis have declared a "caliphate".

Turkey is home to more than three million Syrian refugees, however its refugee camps can only house around 200,000 people.