Syrian civil war

• 1. Introduction

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  The Syrian civil war began in March 2011, when crowds gathered across Syria to demand democratic change from a government that had ruled by fear for decades. What followed was nearly fourteen years of conflict that transformed a country of almost twenty million people into one of the worst humanitarian catastrophes in modern history. By the time Bashar al-Assad fled to Moscow in December 2024, an estimated 656,493 people had died. Twelve million had been driven from their homes. And five of Syria's six UNESCO World Heritage Sites lay damaged.

  How did a wave of street protests collapse into a war that drew in Russia, Iran, Turkey, the United States, and a dozen armed factions? What made Syria so combustible in the spring of 2011? And what does it mean that the conflict ended not with a negotiated peace, but with a government simply evaporating overnight?

• 2. The Assad Dynasty

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  Hafez al-Assad seized power in November 1970 and declared himself president the following March. He was an Alawite, a minority religious group that would come to anchor the regime's inner circle, even as Sunni Muslims made up roughly seventy-four percent of the country's population. The slogans his party promoted during the 1980s were blunt: "Assad or we burn the country" and "Hafez Assad, forever."

  The 1973 constitution that Hafez imposed stripped Islam of its status as the state religion and removed the requirement that Syria's president be Muslim. That triggered fierce demonstrations in Hama, Homs, and Aleppo, organized by the Muslim Brotherhood and religious scholars. When the Syrian Muslim Brotherhood launched an armed revolt between 1976 and 1982, the regime crushed it with lethal force. Critics described Ba'athist Syria as "a dictatorship with genocidal tendencies," pointing to a government apparatus that combined censorship, mass murder, forced deportation, and systematic torture.

  Hafez died in 2000 and was succeeded by his son Bashar. Western observers initially saw reason for hope. Bashar's wife Asma, a Sunni Muslim born and educated in Britain, was described in the Western press as a "rose in the desert," and the couple appeared to offer a path toward reform. That hope faded quickly. Bashar dismantled the civil society groups and democratic activists who had emerged during the Damascus Spring of the 2000s, and a Human Rights Watch report issued just before the 2011 uprising stated that he had failed to substantially improve the state of human rights since taking power.

• 3. The Kindling

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  Syria in 2010 had a nominal GDP per capita of only $2,834, comparable to sub-Saharan African countries such as Nigeria and far below neighboring Lebanon. Youth unemployment was particularly severe. The policies that free market reforms introduced in Hafez's later years, accelerated under Bashar, had concentrated benefits among those with government connections and among the Sunni merchant class of Damascus and Aleppo. For the rest of Syria, especially in poorer cities like Daraa and Homs, the economic picture was bleak.

  Driving deeper poverty was the most intense drought ever recorded in Syria, which ran from 2006 to 2011. Crop failures rippled across the country, food prices climbed, and farming families poured into the cities. That migration strained infrastructure already under pressure from roughly 1.5 million refugees who had arrived from Iraq. Researchers later linked the drought to anthropogenic climate change, though debate continued about how much weight to assign climate relative to other causes of the uprising.

  Meanwhile, Syria remained under an official state of emergency that had been in place since 1963. Public gatherings of more than five people were banned. Security forces held sweeping powers of arrest. In 2010, Bashar imposed a national ban on female Islamic dress codes, including face veils, at universities, and reportedly reassigned more than a thousand primary school teachers who wore the niqab to administrative jobs. When the Arab Spring arrived, all of this history came with it.

• 4. Fractured Opposition

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  From the early days of the uprising, the Syrian opposition was never a single force. The Free Syrian Army formed as an insurgency among defectors from the Syrian military. Qatar, Turkey, and a United States-led program supplied arms and training. Under operation Timber Sycamore, CIA operatives and US special operations troops trained and armed nearly 10,000 rebel fighters at a cost of $1 billion a year from 2012 onward.

  A second major bloc was the Syrian Salvation Government, a Sunni Islamist administration headquartered in Idlib Governorate and led by Hay'at Tahrir al-Sham. HTS governed that region from 2017 until 2024. A third independent force was the Autonomous Administration of North and East Syria, known as Rojava, whose military arm was the Syrian Democratic Forces, a multi-ethnic coalition led by the Kurdish People's Defense Units. The AANES described itself as pursuing anarchistic, feminist, and libertarian socialist principles, and gained de facto autonomy in 2012.

  Alongside these three, the Islamic State seized control of eastern Syria and western Iraq in 2014, prompting a US-led aerial bombing campaign. Al-Qaeda's Syrian branch, known as Hurras al-Din, also operated in the country. By the mid-point of the war, an observer tracking the front lines would have been following the simultaneous movements of the Assad government, three alternative governments, and multiple jihadist organizations, all operating in contested terrain.

• 5. Foreign Hands

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  Iran launched a military intervention in support of the Assad government in 2013. Russia followed in September 2015, conducting airstrikes and ground operations. Hezbollah, the Lebanese Shia militant group, had been supporting Assad from 2011 and publicly acknowledged its presence in Syria in 2013. At any given time, an estimated 5,000 to 8,000 Hezbollah fighters were inside the country, including special forces, standing units, part-time fighters, and new recruits.

  On the other side, Turkey occupied parts of northern Syria, fighting the SDF, the Assad government, and the Islamic State while supporting the Syrian National Army. In June 2017, Iran struck Islamic State targets in Deir ez-Zor using Zolfaghar ballistic missiles fired from western Iran, traveling 650-700 kilometres. The strike was Iran's first use of mid-range missiles in thirty years.

  Israel did not formally join any faction but conducted repeated strikes against Hezbollah and Iranian elements inside Syria, viewing their presence as a security threat. Through Operation Good Neighbor, Israel also provided medical treatment to Syrians at a field hospital in the Golan Heights, where rebels reported that 250 of their fighters received care. The conflict drew in so many competing state interests that international organizations accused virtually all sides, including the Assad government, the Islamic State, opposition groups, Iran, Russia, Turkey, and the US-led coalition, of severe human rights violations.

• 6. Chemical Weapons

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  Sarin, mustard agent, and chlorine gas were each used during the Syrian civil war. An investigation by researchers at the GPPi research institute documented 336 confirmed attacks involving chemical weapons between the 23rd of December 2012 and the 18th of January 2019. That study attributed 98 percent of all chemical attacks to the Assad regime. Almost 90 percent of those attacks occurred after the Ghouta sarin attack of August 2013.

  The Ghouta attack was the deadliest use of chemical weapons since the Iran-Iraq War. International pressure following it led to the announced destruction of Syria's chemical arsenal, but in 2015 a UN mission disclosed undeclared traces of sarin compounds at a military research site. A confidential report from the UN and the Organisation for the Prohibition of Chemical Weapons in August 2016 explicitly blamed Syrian military forces for dropping chlorine bombs on the towns of Talmenes in April 2014 and Sarmin in March 2015. It also blamed the Islamic State for using sulfur mustard on the town of Marea in August 2015.

  In April 2021, Syria was suspended from the OPCW by a public vote of member states for failing to cooperate with the investigation body and for violating the Chemical Weapons Convention. A July 2021 OPCW report concluded that the Syrian regime had carried out confirmed chemical attacks on at least seventeen occasions out of seventy-seven reported incidents attributed to Assad's forces. Jonathan Allen, the UK's deputy ambassador to the UN, stated that the OPCW's findings identified the Syrian regime as responsible for using chemical weapons on at least four occasions.

• 7. Human Cost

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  The most violent year of the conflict was 2014, when around 110,000 people were killed. By mid-March 2025, opposition activist group the Syrian Observatory for Human Rights reported that 26,282 children had been killed over the course of the war, along with 16,181 women. The Syrian Network for Human Rights estimated that between 2011 and 2024, the Ba'athist government and its foreign allies were responsible for approximately 91 percent of total civilian casualties.

  Among the documented atrocities was the Saydnaya military prison, where Amnesty International reported in February 2017 that an estimated 13,000 people, mostly civilians, had been murdered. Killings began in 2011 and were still ongoing at the time of publication. Amnesty described this as a "policy of deliberate extermination" authorized at the highest levels of the Syrian government. International lawyer Stephen Rapp stated that the evidence against Assad surpassed what was available at Nuremberg, because Syrian military prisons had photographed individual victims with identifying information.

  The 2014 Caesar Report, based on evidence smuggled out of the country by a dissident army photographer who worked in Ba'athist military prisons, contained photographs of approximately 11,000 detainees showing systematic killing. Many victims were young men; their bodies were emaciated, bloodstained, and bore signs of torture including strangulation and electrocution. Germany alone accepted more than 850,000 Syrian refugees since 2011, while an estimated 6.7 million were forced to flee the country altogether.

• 8. The Collapse of December 2024

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  On the 27th of November 2024, Hay'at Tahrir al-Sham launched a major offensive against Syrian Army positions in Aleppo, Idlib, Hama, and Homs. Aleppo, once Syria's largest city and the site of a four-year battle that Assad's forces had won in 2016, fell in three days. HTS then captured Hama and pressed south toward Homs. Simultaneously, southern rebels took Daraa, Suwayda, and Palmyra.

  On the 8th of December, Bashar al-Assad fled to Moscow, where Russia granted asylum to him and his family. Homs fell to HTS on the same day that southern rebels entered Damascus. Assad's prime minister, Mohammad Ghazi al-Jalali, remained in Damascus and transferred power to a provisional government. The Syrian Army confirmed that Assad had left the country, ending more than sixty years of Ba'athist rule.

  At the Syrian Revolution Victory Conference held at the Presidential Palace in Damascus in January 2025, the new government announced the dissolution of several armed militias and the appointment of Ahmed al-Sharaa, the former leader of Hay'at Tahrir al-Sham, as president of Syria. Israel launched an invasion of Syria's Quneitra Governorate, including the UN buffer zone, from its fifty-eight-year occupation of the Syrian Golan Heights. Later in 2025, a Druze insurgency emerged in the southern Suweida Governorate following clashes with the government and reported sectarian violence, a reminder that the country's fractures had not healed with the fall of one regime.