Journalist Zouhir al-Shimale, who earlier posted a video from Aleppo describing cluster bombs exploding after an air strike, has tweeted that bombs are still being dropped "randomly", resulting in "deaths" and "injuries".

Because the small "bomblets" in cluster bombs can continue to explode after an attack, the weapons are considered highly dangerous to civilians. They have been banned in many countries since 2008. But there are some exceptions to the UN Convention on Cluster Munitions - several countries including the US, Syria and Russia have not signed up.

Mr al-Shimale tweeted an hour ago, after the sun had already set in Aleppo.

Image source, Abdulkafi

Through the war in Syria (five years and counting), Aleppo has gone from being a cultural and commercial capital with two million inhabitants, to a divided and bombed husk of its former self. In the east, hundreds of thousands of people have been under siege in a situation where food has been running out, medical supplies are low or non-existent, and sometimes bombs have fallen from the sky.

So why does anyone still live there?

Back in November, the BBC asked people in eastern Aleppo just that.

Some were trapped and had missed their chance to leave. Some were defiant and said their home was their home, and they would not leave.

Read their responses here.

The World at One
BBC Radio 4

"The willingness, the political will, the lack of wherewithal as a group to act in Syria is unfortunately part of the story," said the former US State Department official James Rubin.

He spoke to the BBC's The World at One programme, which is broadcast on the UK's Radio 4 station at lunchtime.

He said Western countries had responded to past failures in Libya and Iraq.

You can listen to the clip below.

Syrian pro-government forces have taken another district in Aleppo, the Russian Defence Ministry has said. 

Rebel fighters now control just 2.5 sq km (one sq mile) of eastern Aleppo, it said in a statement. 

A statement quoted by the Interfax news agency said government forces had "crossed the canal from the east and liberated the Sukkari district."

It also said that the Syrian troops had observed a 24-hour ceasefire, during which rebels "regrouped and resumed combat activities".

Both sides are blaming each other for the resumption of violence after last night's ceasefire agreement.

People in Turkey have put together an aid convoy that will try to carry food, water and clothing more than 1,000km from Istanbul to Aleppo.

The convoy has been organised by the Turkish IHH Humanitarian Relief Foundation, but it is not clear how they plan to get through.

No aid has been able to enter the besieged parts of the city for months and in September, an aid convoy in the area was attacked and 18 people were killed.

Image source, AFP

Image source, AFP

Meanwhile President Erdogan, whose government brokered yesterday's ceasefire, urged all sides in the conflict to stick to the agreement.

Image source, AP

Both sides have blamed each other for the resumption of fighting in Aleppo on Wednesday.

In a video from the rebel enclave, activist Lina Shamy says the government and its ally Iran is responsible for breaching the ceasefire agreement.

"Revolutionaries will fight till the last breath protecting the civilians here in the city," she warns.

Paris mayor Anne Hidalgo says the lights on the Eiffel Tower will be turned of at 19:00 GMT on Wednesday as a gesture of solidarity with the citizens of the Syrian city of Aleppo.

"This symbolic measure at a building known worldwide will aim to once again alert the international community to the need for urgent action," Ms Hidalgo's office said in a statement. 

Today Programme
BBC Radio 4

Oum Mudar is waiting with her family and their neighbour to be evacuated from rebel-held eastern Aleppo.

"Please, please help us to get out," she says. "We are terrified."

A few pictures have started to emerge from the remaining rebel-held parts of eastern Aleppo. 

Fighting started up again on Wednesday morning, scuppering plans for the evacuation of civilians and rebels.

Image source, Getty Images

Image source, Al Mayadeen

Image source, Salah Ashkar

Journalist Zouhir al-Shimale has posted a video that he says includes the sound of cluster bomblets exploding after an air strike on the rebel enclave.

The Local Co-ordination Committees, an opposition activist network, is also reporting that cluster munitions have been used in air strikes on Wednesday.

BBC Monitoring
News from around the globe

Image source, Syrian State TV

How has the media in the Middle East covered the final push for control of the city of Aleppo? It depends where you look.

In Syria and Iran, some media are celebrating the "liberation" of Aleppo, saying the government has defeated the "terrorists".

But a Syrian pro-opposition TV station has compared the unfolding situation to the Srebrenica massacre, in which more than 8,000 Bosnian Muslims were killed.

Read more from BBC Monitoring about the coverage across the Middle East.

The head of the Syria Civil Defence, whose rescue workers are known as the White Helmets, tweets that many people were killed by the government's bombardment of rebel-held Aleppo earlier on Wednesday.

The BBC's political editor, Laura Kuenssberg, tweets:

Ismail Alabdullah, a volunteer rescue worker with the Syrian Civil Defence, has posted this video showing a ruined street in eastern Aleppo. Gunfire and explosions can be heard in the background.

The mother of Bana Alabed, the seven-year-old Syrian girl who has been tweeting from rebel-held Aleppo in recent months, has sent her first message since writing on Tuesday that "this is my last moment to either live or die".

Fatemeh appealed directly to Turkey's foreign minister, who earlier said he was working to save the ceasefire agreement.

Other people living in the rebel enclave have been describing the confusion on the ground.

A member of the Aleppo Siege Media Centre, a collective of doctors and media professionals in the city, meanwhile urged the international community to act.

Turkey's President Recep Tayyip Erdogan has accused the Syrian government of breaking the ceasefire deal in Aleppo - something it denies

He said the situation was "delicate" and "fragile", and that he would speak with his Russian counterpart about it later on Wednesday.

The Kremlin has confirmed that a call between Mr Erdogan and President Vladimir Puitin is scheduled for later, Russia's RIA news agency reports.

Freelance journalist Zouhir al-Shimale, who is in east Aleppo, was interrupted by heavy shelling this morning during an interview with the BBC's Victoria Derbyshire programme.

"I can't move anywhere else. There is nowhere else safe here ... it will be the same," he said.

Maya Gebeily, an AFP news agency journalist based in Beirut, has been in touch with a colleague inside rebel-held Aleppo.

The Reuters news agency reports that a media unit run by Lebanon's Hezbollah movement - whose fighters are supporting the Syrian government operation in Aleppo - is putting the number of people wanting to leave rebel-held Aleppo at 15,000, including 4,000 fighters.

Before the clashes resumed, the UN special envoy to Syria said the situation inside rebel-held Aleppo was "very concerning".

Staffan de Mistura told reporters on Tuesday night that the area still under opposition control probably only amounted to four to five square kilometres (1.5-1.9 sq miles). Up to 50,000 civilians were still there, along some 1,500 fighters, he added.

There is virtually no food left in the rebel enclave. No fully equipped hospital is functioning and the Syrian Civil Defence rescue service is reported to be barely operating.