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What happened to the war in Syria?

A fighter from Jaysh al Islam runs to avoid sniper fire in Douma
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by Philip Whiteside, international news reporter

Growing numbers of governments around the world are acknowledging that the war in Syria is effectively over.

As foreign ministries re-establish diplomatic relations with the regime of the president, Bashar al Assad, Syrian government forces have begun attempting to retake Idlib, the last rebel held territory.

So, how did we get here? What happened to the huge array of groups who, over the years of the war, have opposed Assad?

The start

What were Syria's rebels originally protesting about?

Although many Syrians supported Assad before the war, there were many others who harboured resentment against his rule.

Syrians hold up bread during an anti-government protest in Banias, a northern port
Image: Syrians hold up bread during an anti-government protest in Banias, a northern port in 2011

Some of this was as a result of the lack of democracy and cronyism - Assad had been in power since 2000 after being anointed as his father's replacement.

But there was considerable sectarianism too, with some of the majority Sunni Muslims resenting the power that Assad, an Alawite Shia Muslim, both possessed and afforded his allies.

More on Syria

In the previous decades, there had been numerous clashes between the Sunni conservatives and Assad's Ba'athists, some of which had led to the deaths of thousands of people - most notably in Hama where thousands were killed.

Tahrir Square in Cairo was the centre of many of the key protests during the Arab Spring
Image: Cairo's Tahrir Square was the centre of many key protests during the Arab Spring of 2011

In early 2011, protests broke out across the Arab world and North Africa in what became known as the Arab Spring.

The movement spread to Syria when a group of boys were arrested and tortured after daubing anti-government graffiti on a wall.

Many of those who were discontented took up the opportunity to demonstrate against the Syrian regime, and within months, amid a crackdown, the situation descended into fighting.

Where did the fighting break out?

Protests first erupted in several cities in March 2011, and within months had turned into an insurgency.

A map showing the approximate areas of control in June 2012
Image: A map showing the approximate areas of control in June 2012. Source: Institute for the Study of War

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Dec 2011: Children scatter as snipers fire on Homs

Who took up the fight?

Quickly, those rebelling formed into various groups, the members of which shared similar aims.

Some of these, like the Free Syrian Army (FSA), shared the secular tendencies of the Ba'athists but opposed Assad.

A Free Syrian Army fighter stands guard in Idlib in February 2012
Image: A Free Syrian Army fighter in Idlib in February 2012

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Sept 2013: The most dangerous checkpoint in the world

Others were Sunni Muslims who were driven by their religious beliefs.

With large numbers of Sunnis becoming involved in the growing conflict, into the fray stepped al Qaeda, which was fresh from its involvement in the post-Iraq War violence.

Some Islamic fighting groups allied themselves with the aims of the Free Syrian Army, while others sought a future in which the Syrian state and Islam were intertwined.

A picture said to show a group of Islamists, including al Nusra Front, rejecting Syria's opposition
Image: A picture said to show a group of Islamists, including al Nusra Front, rejecting Syria's opposition

Were any of those involved from outside Syria?

Besides al Qaeda, another group involved in the Iraqi conflict also realised it could achieve its aims if it became involved in Syria's war.

Abu Bakr al Baghdadi, the founder of Islamic State of Iraq and the Levant (ISIL), sent fighters into northeast Syria to take part in the insurgency.

ISIS leader  Abu Bakr al-Baghdadi.
Image: IS leader Abu Bakr al Baghdadi urged Muslims to join him and 'make jihad'

Although originally an ally of al Qaeda, he fell out with its spiritual head Ayman al Zawahiri, and ordered his fighters to seize territory.

It resulted in the al Nusra Front, an al Qaeda-affiliated group which had originally been part of ISIL, splitting off and fighting separately.

ISIL's success in taking territory across Syria and Iraq led to a flood of recruits coming into Syria from outside to fight for ISIL, which hailed Raqqa its capital and renamed itself Islamic State (IS).

Where did Islamic State's recruits come from?

A graph showing the origin of Islamic State fights. Source: Soufan Center
Image: A graph showing the origin of Islamic State fighters. Source: Soufan Center
A graph showing the origin of Islamic State fights. Source: Soufan Center
Image: A graph showing the origin of Islamic State fighters. Source: Soufan Center

The battles

Where did the civil war's main battles take place?

HOMS (2011-2014)

Homs was one of the first places where clashes between protesters and Syrian police intensified to combat.

A brigade from the Free Syrian Army first began ambushing government forces and then took over several neighbourhoods.

They were gradually surrounded and held out for several years before the arrival of Lebanese Hezbollah militia to bolster regime forces forced them to evacuate the city.

Three women walk among destroyed buildings in Homs
Image: Destroyed buildings in Homs in 2016
A map showing the approximate lines of control in Syria in summer 2014
Image: A map showing the approximate lines of control in Syria in summer 2014

ALEPPO (2012-2016)

Syria's second-biggest city and commercial centre was largely peaceful at the start of the war, where only rival demonstrations took to the street.

But by July 2012, the conflict that was escalating elsewhere arrived as rebels who came from nearby villages entered the city and were attacked by government forces.

Free Syrian Army rebels fight Islamic State at close quarters in Yarmoul., north of Aleppo
Image: Free Syrian Army rebels fight Islamic State at close quarters in Yarmoul, north of Aleppo

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2016: Living among bombs - The children of Aleppo

Several factions, including the FSA, Sunni opposition rebels and the al Nusra Front seized various districts and began a war of attrition against the regime, as front lines moved forward and backwards.

Increasingly, the Russian military became involved and, after capturing several Shia villages on the outskirts, cut off the rebel strongholds in the city and gradually tightened their stranglehold.

By December 2016, with just a scrap of the territory they had held remaining in rebel hands, a deal was struck to allow anyone who wanted to leave to flee. Most headed towards Idlib.

A man carries a girl injured in a reported government forces bomb attack in Aleppo in June 2014
Image: A reported government bomb attack in Aleppo in June 2014

RAQQA AND NORTHEAST SYRIA (2013-2017)

ISIL's battle-hardened Iraqi veterans, sent into the country by al Bagdadi, quickly established themselves in a number of areas, including the northern Sunni-majority city of Raqqa.

In 2013, fighters from ISIL and other mostly Sunni Islamist groups overcame a small government contingent and captured the first provincial capital to fall into rebel hands.

Islamic State fighters take part in a military parade in Raqqa province in June, 2014
Image: Islamic State fighters at a military parade in Raqqa province in June 2014

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Mar 2011: The IS ghost town where bodies hung in street

Following a split with al Qaeda, ISIL loyalists - many of whom were foreign - began to concentrate themselves in the Raqqa area (as well as Aleppo), at a point when the group was seizing territory in neighbouring Iraq.

Leaders of the group claimed they had set up a new caliphate, the Islamic State (IS), with Raqqa as its Syrian capital.

The West, fearing the establishment of a new, hardline Islamic nation, began to support rival rebel fighters in the region - the Kurdish YPG.

US-led airstrikes and increasingly well-armed Kurds began to take territory from IS - as they did in Iraq too - driving them back from towns like Kobane, into the city until, eventually, they were forced to flee.

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Oct 2017: Raqqa - Inside Islamic State's prison of death

EASTERN GHOUTA (2013-2018)

Like Aleppo, Ghouta took a while to become involved in the conflict, despite initial protests.

By May 2013, however, a face-off between government forces and rebels, mainly from the Jaysh al Islam (Army of Islam), the FSA and various Sunni Islamist groups, led to the eastern part of the area becoming besieged.

It was estimated in 2016 that 400,000 people were in territory surrounded by the Syrian government forces.

A series of brutal operations failed to dislodge the rebels for five years, during which time they sometimes fought among themselves, until in March 2018, after a prolonged pro-government offensive, with assistance from Syria's allies, the rebel-held areas were first split and picked off.

A deal was struck and tens of thousands of people, including rebels, were allowed to leave.

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Feb 2018: The desperate fight for survival in Ghouta
A Syrian regime member walks amid the destruction in Eastern Ghouta in April 2018
Image: A Syrian regime member walks amid the destruction in Eastern Ghouta in April 2018

DEIR EZ ZOR (2014-2017)

Government troops in the desert outpost city of Deir ez Zor held out for three years despite being surrounded by Islamic State forces.

After the Syrian army retook control of southern Raqqa province, it was able to turn its attention to Deir ez Zor, and recaptured the city a few months later, pushing out into the surrounding countryside, and taking with it IS's last territories.

A Christian Syriac patriarch holds mass at a heavily damaged church in Deir Ez Zor in February 2018
Image: A Christian Syriac patriarch holds mass at a heavily damaged church in Deir Ez Zor in February 2018

DARAA (2011-2018)

Daraa is said to be the cradle of the revolution after the arrest of 15 boys who painted anti-government slogans sparked the Syrian uprising in March 2011.

Already a hotbed of anti-government feeling, Daraa became the location for a major offensive against Assad's forces in 2014, when rebels united under the banner of an umbrella group called the Southern Front.

Clashes between the Southern Front and IS split the resources of the rebels, and when the Syrian army went on the attack in June 2017, and again in 2018, pushed the rebels back, eating away at their territory until they were forced to surrender.

Smoke rises following a reported air strike on a rebel-held area in Daraa in June 2017
Image: A reported air strike on a rebel-held area in Daraa in June 2017
A map showing the approximate lines of control in Syria in June 2016
Image: A map showing the approximate lines of control in Syria in June 2016

The casualties

How many have been killed and injured?

The UK-based Syrian Observatory for Human Rights, which has been documenting the conflict, said in March 2018 that the war has killed about 511,000 people.

A graph showing the number of deaths in Syria per year according to the Syrian Observatory for Human Rights
Image: A graph showing the number of deaths in Syria per year according to the Syrian Observatory for Human Rights

The names of more than 350,000 victims are known, the observatory says, and the remainder are cases where it knows deaths occurred but does not know the victims' names.

A non-governmental organisation, the Violations Documentation Centre in Syria, puts the figure lower, at 190,000 killed as a result of battle, of whom, about 122,000 are civilians.

In a 2018 report, the UN said it had identified 7,000 children who had been killed or maimed since the start of the war.

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Syrian boy Omran a symbol of the suffering

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Dec 2016: Aleppo's trapped: 'We can't bury our dead'

Where did people who had to leave their homes go?

An estimated 13.5 million people - out of a total pre-war population of 22 million - have been displaced from their homes by the Syrian civil war.

Refugee crisis one year on
Image: Hundreds of thousands of Syrians were among a stream of refugees and migrants who went to Europe in 2015

More than six million of those have been displaced inside Syria and a similar number have fled the country to a range of other nations.

Most have not gone very far - with Turkey the country with by far the most Syrian refugees (3.5 million). Huge numbers have also ended up in Lebanon (nearly one million), Jordan (670,000) and Iraq (248,000).

But large numbers have also fled to Europe: Syrians were the largest group of those undertaking the dangerous journey across the Aegean, from Turkey to Greece, during the migration crisis in 2015.

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Feb 2016: Turkey the only hope for Aleppo's refugees

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Oct 2016: Families tell of IS horror in Raqqa

The violence

What are some of the worst atrocities?

CHEMICAL WEAPONS

Use of chemical weapons in the Syrian war was been confirmed by several reports from the United Nations.

Among the weapons alleged to have been used are: sarin (including a claimed attack on the Khan al Asal suburb of Aleppo in March 2013); chlorine (including a claimed attack on the rebel-held village of Kafr Zita, north of Hama, in April 2014); and mustard gas (including a claimed attack on Kurdish fighters in villages in the far northeast in June 2015).

People affected by what activists said was nerve gas targeted at Ghouta in August 2013
Image: People affected by what activists said was nerve gas targeted at Ghouta in August 2013

While Islamic State has been blamed for a few of the attacks, the Syrian regimes has been accused of the majority.

Their use came at key points in the war.

After allegations of the first major chemical weapons attack in Ghouta in August 2013, then-US president Barack Obama said Syria had crossed a red line and he would be seeking retaliation.

But after indecision, and when there proved little support for it in Congress or in the UK, he struck a deal with Russia to force Syria to disarm, with hundreds of tonnes of chemicals removed and destroyed.

A child is treated following an alleged chemical weapons attack in Douma, Syria. Pic:
Image: A child is treated following an alleged chemical weapons attack in Douma, eastern Ghouta, in April 2018

When an alleged attack took place eastern Ghouta, in the town of Douma in April 2018, it was US President Donald Trump who was under pressure to respond.

Within the next week, the UK, US, France and Israel launched airstrikes against Syrian military bases.

BARREL BOMBS DROPPED ON CIVILIANS

A Syrian army helicopter drops barrel bombs on a rebel-held area in the southern city of Daraa
Image: A Syrian army helicopter drops barrel bombs on a rebel-held area in the southern city of Daraa in June 2017

From 2013 to 2018, hundreds of barrel bombs - barrels filled with high explosive and shrapnel - are said to have been dropped in rebel-held areas by the Syrian air force.

They were often focused on areas where rebel forces were under siege, such as eastern Aleppo and and eastern Ghouta.

A study in The Lancet Global Health in December 2017 found about 97% of the deaths caused by the bombs were of civilians - an issue which could constitute a war crime, the researchers said.

Smoke rises after what activists said was a barrel bomb dropped by government forces in Daraya, west of Damascus
Image: Smoke rises after what activists said was a barrel bomb attack in Daraya, west of Damascus, in January 2014

DOUBLE TAP AIRSTRIKES

Some of the barrel bomb drops are alleged to have been "double tap" attacks, with the aim of killing and injuring those who rush to help after a first blast.

Among the alleged attacks was a hit on a Medecins San Frontiers hospital in Homs in December 2015 and several attacks on the White Helmets rescue teams, according to The Economist.

RAPE AND MURDER OF CAPTIVES

There have been widespread reports of rape being used as a weapon in the conflict, with international NGO International Rescue Committee among others, saying that it is fear of the sex crime above anything else that had forced many Syrians to become refugees.

An image said to be of Islamic State captive, Muath al-Kasaesbeh, a Jordanian pilot, shortly before his murder
Image: An image said to be of IS captive Muath al Kasasbeh, a Jordanian pilot, shortly before his murder in January 2015

While all parties have been blamed in the seven-year war, greatest attention has been paid to the abuse metered out by Islamic State.

The UN Commission of Inquiry on Syria found that women in territory controlled by IS, particularly Yazidis, "endured brutal rapes, often on a daily basis".

Islamic State has also been blamed for the mass execution of unknown numbers of prisoners of war, civilians, and even its own fighters who tried to defect.

IS BEHEADING WESTERNERS

In summer 2014, soon after Islamic State declared its caliphate, videos began to emerge on the group's news services of Western journalists and aid workers being beheaded by a shadowy British-accented figure who became dubbed "Jihadi John".

IS victims David Haines, Steve Sotloff, Alan Henning and James Foley
Image: (l-r) IS victims David Haines, Steve Sotloff, Alan Henning and James Foley

Before the end of the following January, videos purporting to show or prove the murders of at least seven US, British and Japanese civilians had been released. Dozens of others are also thought to have been decapitated.

Jihadi John, whose real name it later emerged was Kuwaiti-born but London-raised Mohammed Emwazi, was later killed in an airstrike. Two other members of a group which held Westerners hostage, dubbed "the Beatles" because of their British accents, were later captured and are awaiting justice in Kurdish-held territory.

Mohammed Emwazi
Image: Several of the beheadings are said to have been carried out by Kuwaiti-born Briton Mohammed Emwazi

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April 2018: Beheading videos are just 'propaganda'

What else has been destroyed?

PALMYRA

Once a stronghold of the Syrian regime, Palmyra was a publicity coup for Islamic State when they took it from Assad's forces in 2015.

As well as being one of the best preserved Roman-era Middle Eastern cities and a UN World Heritage Site, Palmyra was considered notable for the quality, time-range and scale of its architecture.

As they had done in Iraq, IS set about destroying what they saw as infidel symbols, blowing up many of the sites with explosive, including the huge Temple of Bel, despite its former use as a mosque.

The temple contained decorative motifs which are said to have heavily influenced British architectural styles that became predominant during the Georgian period.

ALEPPO

The ancient city of Aleppo, the roots of which go back many millennia, is another UNESCO World Heritage Site which has suffered extensive damage during the war.

Its medieval mosques and covered souks had been used by visitors for more than 1,000 years before they were attacked and largely destroyed in fighting between rebels and the regime.

UNESCO estimates 30% of the ancient city has been reduced to rubble.

Which other countries have got involved?

While many Western countries were quick to declare their support for the rebels in the early stages of the revolution, it took some time before any took decisive action.

Assad's alleged use of chemical weapons, however, changed the attitudes of many governments, and the advance of Islamic State meant some leaders felt compelled to act - often covertly.

What is happening now?

Who remains in the fight?

Still fighting the Syrian regime are a number of rebel groups which have morphed significantly since the war started years ago.

Some are also continuing to fight each other, as the skirmishes for territory go on.

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October 2015: Fighting IS - Big Phil's War

What does the future hold?

As Assad's forces retook control of the many of the areas caught up in the war's biggest battles, many of those evacuated fled to Idlib.

With thousands of extremist rebels in Idlib and millions of civilians sheltering there, having fled conflict in other areas, there are fears about what could happen in coming months.

If Assad does sweep across the province, the consequences would be not just the deaths of and injuries to those caught up in the battle and the crossfire: it is feared it would spark a new refugee crisis.

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Aug 2018: Idlib - The last stand in Syria for ISIS
A map showing the approximate lines of control in Syria in August 2018
Image: A map showing the approximate lines of control in Syria in August 2018

Another danger is to Syrians living in areas where rebels are still fighting each other.

The announcement by Mr Trump before Christmas 2018 that he will pull troops out of Syria threatened to create a power vacuum in rebel-held areas, disturbing the uneasy status quo that has existed since IS were defeated.

Recep Tayyip Erdogan, who, as president of Turkey, is leader of a country where 3.6 million Syrians have already fled as refugees and which backs one of the rebel factions that remain, has warned of a "humanitarian tragedy" looming if the fighting doesn't stop.