This article is from the source 'bbc' and was first published or seen on . The next check for changes will be

You can find the current article at its original source at https://www.bbc.com/news/articles/ce313jn453zo

The article has changed 16 times. There is an RSS feed of changes available.

Version 4 Version 5
Who are the rebels seizing control of Syria's second city? Who are the rebels in Syria?
(6 days later)
Rebel forces launched the largest offensive against the Syrian government in years on Wednesday. Rebel forces have launched the largest offensive against the Syrian government in years.
By Sunday, they had taken control of "large parts" of the country's second-biggest city, Aleppo and were advancing towards Hama in the south. In just over a week they have taken control of the country's second-biggest city Aleppo, the city of Hama and were gathering outside the major city of Homs further south.
The surprise offensive prompted the first Russian strikes on Aleppo since 2016, and saw Syria's military withdraw its troops from the city. The surprise offensive met little resistance from the Syrian military, which pulled its troops back from the city, as well as from Hama and other areas.
The attack was led by the Islamist militant group Hayat Tahrir al-Sham (HTS) - which has a long and involved history in the Syrian conflict.The attack was led by the Islamist militant group Hayat Tahrir al-Sham (HTS) - which has a long and involved history in the Syrian conflict.
Live updates on this story HTS is designated as a terrorist organisation by the UN, US, Turkey and other countries.
Who are Hayat Tahrir al-Sham?Who are Hayat Tahrir al-Sham?
HTS have led the charge into AleppoHTS have led the charge into Aleppo
HTS was set up under a different name, Jabhat al-Nusra, in 2011 as a direct affiliate of Al Qaeda.HTS was set up under a different name, Jabhat al-Nusra, in 2011 as a direct affiliate of Al Qaeda.
The leader of the self-styled Islamic State (IS) group, Abu Bakr al-Baghdadi, was also involved in its formation.The leader of the self-styled Islamic State (IS) group, Abu Bakr al-Baghdadi, was also involved in its formation.
It was regarded as one of the most effective and deadly of the groups ranged against President Assad.It was regarded as one of the most effective and deadly of the groups ranged against President Assad.
But its jihadist ideology appeared to be its driving force rather than revolutionary zeal - and it was seen at the time as at odds with the main rebel coalition under the banner of Free Syria.But its jihadist ideology appeared to be its driving force rather than revolutionary zeal - and it was seen at the time as at odds with the main rebel coalition under the banner of Free Syria.
And in 2016, the group’s leader, Abu Mohammed al-Jawlani, publicly broke ranks with Al Qaeda, dissolved Jabhat al-Nusra and set up a new organisation, which took the name Hayat Tahrir al-Sham when it merged with several other similar groups a year later.And in 2016, the group’s leader, Abu Mohammed al-Jawlani, publicly broke ranks with Al Qaeda, dissolved Jabhat al-Nusra and set up a new organisation, which took the name Hayat Tahrir al-Sham when it merged with several other similar groups a year later.
Who is in control in Syria? For some time now, HTS has established its power base in the north-western province of Idlib where it is the de facto local administration, although its efforts towards legitimacy have been tarnished by alleged human rights abuses.
The war in Syria has for the past four years felt as if it were effectively over. It has also been involved in some bitter infighting with other groups.
President Bashar al-Assad’s rule is essentially uncontested in the country’s major cities, while some other parts of Syria remain out of his direct control. Its ambitions beyond Idlib had become unclear.
Since breaking with Al Qaeda, its goal has been limited to trying to establish fundamentalist Islamic rule in Syria rather than a wider caliphate, as IS tried and failed to do.
It had shown little sign of attempting to reignite the Syrian conflict on a major scale and renew its challenge to Assad’s rule over much of the country - until now.
Why is there a war in Syria?
In March 2011, pro-democracy demonstrations erupted in the southern city of Deraa, inspired by uprisings in neighbouring countries against repressive rulers.
When the Syrian government used deadly force to crush the dissent, protests demanding the president's resignation erupted nationwide.
The unrest spread and the crackdown intensified. Opposition supporters took up arms, first to defend themselves and later to rid their areas of security forces. Mr Assad vowed to crush what he called "foreign-backed terrorism".
Hundreds of rebel groups sprang up, foreign powers began to take sides and extremist jihadist organisations such as the Islamic State (IS) group and al-Qaeda, became involved.
The violence rapidly escalated and the country descended into a full-scale civil war drawing in regional and world powers.
More than half a million people have been killed and 12 million have been forced to flee their homes, about five million of whom are refugees or asylum seekers abroad.
How did the rebel offensive come about?
The war in Syria had for the past four years felt as if it were effectively over.
President Bashar al-Assad’s rule had essentially been uncontested in the country’s major cities, while some other parts of Syria remained out of his direct control.
These include Kurdish majority areas in the east, which have been more or less separate from Syrian state control since the early years of the conflict.These include Kurdish majority areas in the east, which have been more or less separate from Syrian state control since the early years of the conflict.
There has been some continued, though relatively muted unrest, in the south where the revolution against Assad’s rule began in 2011. There had been some continued, though relatively muted unrest, in the south where the revolution against Assad’s rule began in 2011.
In the vast Syrian desert, holdouts from the group calling themselves Islamic State still pose a security threat, particularly during the truffle hunting season when people head to the area to find the highly profitable delicacy.In the vast Syrian desert, holdouts from the group calling themselves Islamic State still pose a security threat, particularly during the truffle hunting season when people head to the area to find the highly profitable delicacy.
And in the north-west, the province of Idlib has been held by militant groups driven there at the height of the war.And in the north-west, the province of Idlib has been held by militant groups driven there at the height of the war.
HTS, the dominant force in Idlib, is the one that has launched the surprise attack on Aleppo.HTS, the dominant force in Idlib, is the one that has launched the surprise attack on Aleppo.
Bitter infighting
For several years, Idlib remained a battleground as Syrian government forces tried to regain control.For several years, Idlib remained a battleground as Syrian government forces tried to regain control.
But a ceasefire deal in 2020 brokered by Russia, which has long been Assad’s key ally, and Turkey, which has backed the rebels, has largely held.But a ceasefire deal in 2020 brokered by Russia, which has long been Assad’s key ally, and Turkey, which has backed the rebels, has largely held.
About four million people live there - most of them displaced from towns and cities that Assad’s forces won back from rebels in a brutal war of attrition.About four million people live there - most of them displaced from towns and cities that Assad’s forces won back from rebels in a brutal war of attrition.
Aleppo was one of the bloodiest battlegrounds and represented one of the rebels’ biggest defeats.Aleppo was one of the bloodiest battlegrounds and represented one of the rebels’ biggest defeats.
To achieve victory, President Assad could not depend on the country’s under-equipped and poorly motivated conscript army alone, which soon became dangerously stretched and regularly unable to hold positions against rebel attacks.To achieve victory, President Assad could not depend on the country’s under-equipped and poorly motivated conscript army alone, which soon became dangerously stretched and regularly unable to hold positions against rebel attacks.
Instead, he came to rely heavily on Russian airpower and Iranian military help on the ground - mainly through militias sponsored by Tehran.Instead, he came to rely heavily on Russian airpower and Iranian military help on the ground - mainly through militias sponsored by Tehran.
These included Hezbollah.These included Hezbollah.
There is little doubt that the setback Hezbollah has suffered recently from Israel’s offensive in Lebanon, as well as Israeli strikes on Iranian military commanders in Syria, has played a significant part in the decision by jihadist and rebel groups in Idlib to make their sudden, unexpected move on Aleppo.There is little doubt that the setback Hezbollah has suffered recently from Israel’s offensive in Lebanon, as well as Israeli strikes on Iranian military commanders in Syria, has played a significant part in the decision by jihadist and rebel groups in Idlib to make their sudden, unexpected move on Aleppo.
HTS had shown little sign of attempting to reignite the Syrian conflict until this week
In the past few months, Israel has intensified its attacks on Iranian-linked groups as well as their supply lines, inflicting serious damage on the networks that have kept these militias, including Hezbollah, operative in Syria.In the past few months, Israel has intensified its attacks on Iranian-linked groups as well as their supply lines, inflicting serious damage on the networks that have kept these militias, including Hezbollah, operative in Syria.
Without them, President Assad’s forces have been left exposed.Without them, President Assad’s forces have been left exposed.
For some time now, HTS has established its power base in Idlib where it is the de facto local administration, although its efforts towards legitimacy have been tarnished by alleged human rights abuses.
It has also been involved in some bitter infighting with other groups.
Its ambitions beyond Idlib had become unclear.
Since breaking with Al Qaeda, its goal has been limited to trying to establish fundamentalist Islamic rule in Syria rather than a wider caliphate, as IS tried and failed to do.
It had shown little sign of attempting to reignite the Syrian conflict on a major scale and renew its challenge to Assad’s rule over much of the country - until now.
Additional reporting by Maia Davies.Additional reporting by Maia Davies.