Free Syrian Army in the context of "Russian intervention in the Syrian civil war"

The Syrian civil war was an armed conflict that began with the Syrian revolution in March 2011, when popular discontent with the Ba'athist regime ruled by Bashar al-Assad triggered large-scale protests and pro-democracy rallies across Syria, as part of the wider Arab Spring. The Assad regime responded to the protests with lethal force, which led to a series of defections, the emergence of armed opposition groups, and the civilian uprising descending into a civil war. The war lasted almost 14 years and culminated in the fall of the Assad regime in December 2024. Many sources regard this as the end of the civil war.

The Syrian opposition to Bashar al-Assad began an insurgency, forming groups such as the Free Syrian Army. Anti-Assad forces received arms from states such as Qatar and Turkey. Pro-Assad forces received financial and military support from Iran and Russia: Iran launched a military intervention in support of the Syrian government in 2013, and Russia followed in 2015. By this time, rebels had established the Syrian Interim Government after capturing the regional capitals of Raqqa in 2013 and Idlib in 2015.

On 22 September 2014, the United States officially intervened in the Syrian civil war with the stated aim of fighting the Islamic State (ISIL/ISIS) militant organization in support of the international war against it, code named Operation Inherent Resolve. The US currently continues to support the Syrian Armed Forces under the transitional government and the YPG-led Syrian Democratic Forces.

Shortly after the start of the civil war in 2011, the Obama administration placed sanctions against Syria and supported the Free Syrian Army rebel faction by covertly authorizing Timber Sycamore under which the Central Intelligence Agency (CIA) armed and trained rebels. Following the Islamic State's occupation of Eastern Syria in August 2014, the United States conducted surveillance flights in Syria to gather intelligence regarding the Islamic State. In September 2014, the United States-led coalition—which involves the United Kingdom, France, Jordan, Turkey, Canada, Australia, and others—launched an air campaign against the Islamic State and al-Nusra Front inside Syria.

The Syrian Democratic Forces (SDF) is a Kurdish-led coalition of U.S.-backed left-wing ethnic militias and rebel groups, and serves as the official military wing of the Democratic Autonomous Administration of North and East Syria (DAANES; also unofficially known as Rojava). Founded on 10 October 2015, the stated mission of the SDF is to create a secular, democratic, and federalized Syria. The SDF is opposed by Turkey, who view the group as an extension of the Kurdistan Workers' Party (PKK), which it has designated a terrorist group. On 10 March 2025, the SDF agreed to integrate into Syrian state institutions under the Syrian caretaker government. Mazloum Abdi met with the committee formed by Ahmed al-Sharaa to implement the deal; further meetings were planned for April.

Formed as a rebel alliance in the Syrian civil war with American support, the SDF is composed primarily of Kurdish, Arab, and Assyrian/Syriac, as well as some smaller Armenian, Turkmen, and Chechen forces. It is militarily led by the People's Protection Units (YPG), a Kurdish militia which is designated as a terrorist group by both Turkey and Qatar. The SDF also includes several ethnic militias and various factions of the Syrian opposition's Free Syrian Army.

The Syrian revolution was a series of mass protests and civilian uprisings throughout Syria – with a subsequent violent reaction by the Ba'athist regime – lasting from 2011 to 2024 as part of the greater Arab Spring in the Arab world. The revolution, which demanded the end of the decades-long Assad family rule, began as minor demonstrations during January 2011 and transformed into large nationwide protests in March. The uprising was marked by mass protests against the Ba'athist dictatorship of president Bashar al-Assad meeting police and military violence, massive arrests and a brutal crackdown, resulting in hundreds of thousands of deaths and tens of thousands wounded. 13 years after the start of the revolution, the Assad regime fell in 2024 after a series of rebel offensives.

Despite al-Assad's attempts to crush the protests with crackdowns, censorship and concessions, the mass protests had become a full-blown revolution by the end of April. The Ba'athist government deployed its ground troops and airforce, ordering them to fight the rebels. The regime's deployment of large-scale violence against protestors and civilians led to international condemnation of the Assad government and support for the protestors. Discontent among soldiers led to massive defections from the Syrian Arab Army, while people began to form opposition militias across the country, gradually transforming the revolution from a civil uprising to an armed rebellion, and later a full-scale civil war. The Free Syrian Army was formed on 29 July 2011, marking the beginning of an armed insurgency.

The Syrian opposition was an umbrella term for the Syrian revolutionary organizations that opposed Bashar al-Assad's Ba'athist regime during the Syrian Revolution and Syrian civil war. The opposition factions in Syria became active as grassroots movements during the mass demonstrations against the Ba'athist regime. The Free Syrian Army (FSA) was the most prominent armed revolutionary group in the initial stages of the war; but it declined and became decentralized by 2015. By 2021, Hay'at Tahrir al-Sham (HTS) had become the strongest armed faction within the Syrian opposition.

In July 2011, as the situation turned into a civil war, defectors from the Syrian Armed Forces formed the Free Syrian Army. In August 2011, dissident groups operating from abroad formed a coalition called the Syrian National Council. A broader organization, the Syrian National Coalition (SNC), was formed in November 2012. Although the groups based abroad established contact with those in Syria, the Syrian opposition suffered during the whole conflict from infighting and a lack of unified leadership, as well as lack of foreign aid as the war became deadlocked.

The early insurgency phase of the Syrian civil war lasted from late July 2011 to April 2012, and was associated with the rise of armed oppositional militias across Syria and the beginning of armed revolution against the Syrian Ba'athist regime. Though armed insurrection incidents began as early as June 2011 when rebels killed 120–140 Syrian security personnel, the beginning of organized insurgency is typically marked by the formation of the Free Syrian Army (FSA) on 29 July 2011, when a group of defected officers declared the establishment of the first organized oppositional military force. Composed of defected Syrian Armed Forces personnel, the rebel army aimed to remove Bashar al-Assad and his government from power.

This period of the war saw the initial civil uprising take on many of the characteristics of a civil war, according to several outside observers, including the United Nations Commission on Human Rights, as armed elements became better organized and began carrying out successful attacks in retaliation for the crackdown by the Syrian government on demonstrators and defectors.