Islamic State in the context of Islamic law

Operation Inherent Resolve (OIR) is the United States military's operational name for the international war against the Islamic State (IS)—a group also known as the Islamic State of Iraq and Syria (ISIS), the Islamic State of Iraq and the Levant (ISIL) or its Arab acronym "Daesh"—including both a campaign in Iraq and a campaign in Syria, with a closely related campaign in Libya. Through 18 September 2018, the U.S. Army's III Armored Corps was responsible for Combined Joint Task Force – Operation Inherent Resolve (CJTF—OIR) and were replaced by the XVIII Airborne Corps. The campaign is primarily waged by American and British forces in support of local allies, most prominently the Iraqi Security Forces (ISF) and Syrian Democratic Forces (SDF). Combat ground troops, mostly special forces, infantry, and artillery have also been deployed, especially in Iraq. Of the airstrikes, 70% have been conducted by the military of the United States, 20% by the United Kingdom, and the remaining 10% being carried out by Australia, Belgium, Canada, Denmark, France, Jordan, the Netherlands, Saudi Arabia, Turkey, and the United Arab Emirates.

According to the Pentagon, by March 2019, the day of IS's territorial defeat in Syria, CJTF—OIR and its partner forces had liberated nearly 110,000 square kilometers (42,471 square miles) of land and 7.7 million people from IS, the vast majority of the self-proclaimed caliphate's territory and subjects. By October 2017, around the time of IS's territorial defeat in Iraq, CJTF—OIR claimed that around 80,000 IS militants had been killed by it and its allies (excluding those targeted by Russian and Syrian air strikes). By the end of August 2019, it had conducted 34,573 strikes. Tens of thousands more were killed by partner forces on the ground (the SDF alone claimed to have killed 25,336 IS fighters by the end of 2017).

The Sinai insurgency was an insurgency campaign in the Sinai Peninsula of Egypt launched by Islamist militants against Egyptian security forces, which also included attacks on civilians. The insurgency began during the Egyptian Crisis, during which the longtime Egyptian president Hosni Mubarak was overthrown in the 2011 Egyptian revolution.

The campaign initially consisted of militants, mainly local Bedouin tribesmen, who exploited the chaotic situation in Egypt to launch a series of attacks on government forces in Sinai. In 2014, members of the Ansar Bait al-Maqdis group pledged allegiance to the Islamic State of Iraq and the Levant (ISIL, or ISIS) and proclaimed themselves Sinai Province, with some security officials stating that militants based in Libya established ties with the Sinai Province group and blaming the porous border and ongoing civil war for the increase in sophisticated weapons available to the Islamist groups.

The Arab Spring (Arabic: الربيع العربي, romanized: ar-rabīʻ al-ʻarabī) was a series of pro-democracy anti-government protests, uprisings, and armed rebellions that spread across much of the Arab world in the early 2010s. It began in Tunisia in response to the death of Mohamed Bouazizi by self-immolation. From Tunisia, the protests initially spread to five other countries: Libya, Egypt, Yemen, Syria and Bahrain. Rulers were deposed: Zine El Abidine Ben Ali of Tunisia, Muammar Gaddafi of Libya, and Hosni Mubarak of Egypt, all in 2011; and Ali Abdullah Saleh of Yemen in 2012. Omar al-Bashir of Sudan was deposed in 2019 after a coup d'état caused by a revolution. Bashar al-Assad of Syria was deposed in December 2024 after 13 years of civil war. Major uprisings and social violence occurred, including riots, civil wars, or insurgencies. Sustained street demonstrations took place in Morocco, Iraq, Algeria, Lebanon, Jordan, Kuwait, Oman and Sudan. Minor protests took place in Djibouti, Mauritania, Palestine, Saudi Arabia and the Western Sahara. A major slogan of the demonstrators in the Arab world is ash-shaʻb yurīd isqāṭ an-niẓām! (Arabic: الشعب يريد إسقاط النظام, lit. 'the people want to bring down the regime').

The wave of initial revolutions and protests faded by mid to late 2012, as many Arab Spring demonstrations were met with violent responses from authorities, pro-government militias, counterdemonstrators, and militaries. These attacks were answered with violence from protesters in some cases. Multiple large-scale conflicts followed: the Syrian civil war; the rise of ISIS, insurgency in Iraq and the following civil war; the Egyptian Crisis, election and removal from office of Mohamed Morsi, and subsequent unrest and insurgency; the Libyan Crisis; and the Yemeni crisis and subsequent civil war. Regimes that lacked major oil wealth and hereditary succession arrangements were more likely to undergo regime change.

The war on terror, officially the Global War on Terrorism (GWOT), is a global military campaign initiated by the United States in response to the September 11 attacks in 2001. A global conflict spanning multiple wars, some researchers and political scientists have argued that it replaced the Cold War.

The main targets of the campaign were militant Islamist movements such as al-Qaeda, the Taliban and their allies. Other major targets included the Ba'athist regime in Iraq, which was deposed in an invasion in 2003, and various militant factions that fought during the ensuing insurgency. Following its territorial expansion in 2014, the Islamic State also emerged as a key adversary of the United States.

Tikrit (Arabic: تِكْرِيت, romanized: Tikrīt [ˈtɪkriːt]) is a city in Iraq, located 140 kilometers (87 mi) northwest of Baghdad and 220 kilometers (140 mi) southeast of Mosul on the Tigris River. It is the administrative center of the Saladin Governorate. In 2012, it had a population of approximately 160,000. Tikrit is widely regarded as the cultural capital of Iraqi Sunni Arabs, with control of the city carrying symbolic weight due to its former prestige.

Originally created as a fort during the Assyrian empire, Tikrit became the birthplace of Muslim military leader Saladin. Saddam Hussein's birthplace was in a modest village (13 km) south of Tikrit, which is called "Al-Awja"; for that, Saddam bore the surname al-Tikriti. The inhabitants of this village were farmers. Many individuals from Saladin Governorate, especially from Tikrit, were government officials during the Ba'athist period until the US-led invasion of Iraq in 2003. Following the invasion, the city has been a site of insurgency by Sunni militants, including the Islamic State who captured the city in June 2014. During the Second Battle of Tikrit from March to April 2015, which resulted in the displacement of 28,000 civilians, Iraqi government forces regained control of the city, with the city at peace since then.

Ahmed Hussein al-Sharaa (born 29 October 1982), also known by his nom de guerre Abu Mohammad al-Julani, is a Syrian politician, revolutionary, and former rebel commander who has served as the president of Syria since 2025. He previously served as the emir of Hay'at Tahrir al-Sham (HTS) from 2017 to 2025 and was Syria's de facto leader from December 2024 until his appointment as president.

Born in Riyadh, Saudi Arabia, to a Syrian Sunni Muslim family from Daraa and the Golan Heights, he grew up in Syria's capital, Damascus. Al-Sharaa joined al-Qaeda in Iraq shortly before the 2003 invasion of Iraq and fought for three years in the Iraqi insurgency. American forces captured and imprisoned him from 2006 to 2011. His release coincided with the Syrian Revolution against the Ba'athist dictatorship of Bashar al-Assad. Al-Sharaa created the al-Nusra Front in 2012 with the support of al-Qaeda to topple the Assad regime in the Syrian civil war. As emir of the al-Nusra Front, al-Sharaa built a stronghold in the northwestern Idlib Governorate. He resisted Abu Bakr al-Baghdadi's attempts to merge al-Nusra Front with the Islamic State, leading to armed conflict between the two groups. In 2016, al-Sharaa cut al-Nusra's ties with al-Qaeda and launched a crackdown on its loyalists. Since breaking with al-Qaeda, he has sought international legitimacy by presenting a more moderate view of himself, renouncing transnational jihadism against Western nations, and focusing on governance in Syria while vowing to protect Syria's minorities.

Christianity in Syria (Arabic: المسيحية في سوريا) has among the oldest Christian communities on Earth, dating back to the first century AD, and has been described as a "cradle of Christianity". With its roots in the traditions of St. Peter and St. Paul the Apostle, Syria quickly became a major center of early Christianity and produced many significant theologians and church leaders. Of the 200 bishops who took part in the First Council of Nicaea in 325 AD, twenty were from Syria. Over the centuries, Syrian Christians have played a vital role in shaping Christian thought and practice, contributing to the development of various liturgical traditions, monastic movements, and theological schools. St. Paul the Apostle famously converted to Christianity on the road to Damascus, and Syria has produced seven Popes: Pope Anicetus (157–168 AD), Pope John V (685–686), Pope Sergius I (687–701), Pope Sisinnius (708), Pope Constantine (708–715), Pope Gregory III (731–741 AD), and the first pope, St. Peter, who was from Bethsaida. Their legacy includes the establishment of some of the most ancient churches, monasteries, and pilgrimage sites, such as the 5th century remains of the Church of Saint Simeon Stylites, Our Lady of Saidnaya Monastery, and the Cathedral of Constantine and Helen.

However, in recent times, the Syrian Christian community has faced numerous challenges, including ongoing and severe persecution, displacement, and emigration. Christians in Syria made up about 10% of the pre-war Syrian population but now make up less than 2%, falling from 1.5 million in 2011 to just 300,000 in 2022 due to the impact of the Syrian Civil War. Christians in Syria have also been subjected to violence and discrimination by Islamic State fighters during their control of large areas of the country. Their churches have been converted into military headquarters, and their property confiscated. Persecution of Christians in Syria has further intensified since. In Aleppo, the country's second largest city, the proportion of Christian residents fell from 12% pre-war to 1.4% in 2023 with more than 20 churches damaged during the war. The city of Idlib has been almost entirely depopulated of its Christian population under Islamist rule. Some governments and organisations including the United States have claimed that the persecution of Christians in the Middle East and North Africa, especially in Syria and Iraq, constitute an act of genocide.

Raqqa (Arabic: ٱلرَّقَّة, romanized: ar-Raqqah, also al-Raḳḳa), is a city in Syria on the North bank of the Euphrates River, about 160 kilometres (99 miles) east of Aleppo. It is located 40 kilometres (25 miles) east of the Tabqa Dam, Syria's largest dam. The Hellenistic, Roman, and Byzantine city and bishopric Callinicum (formerly a Latin and now a Maronite Catholic titular see) was the capital of the Abbasid Caliphate between 796 and 809, under the reign of Harun al-Rashid. It was also the capital of the Islamic State from 2014 to 2017. With a population of 531,952 based on the 2021 official census, Raqqa is the sixth largest city in Syria.

During the Syrian Civil War, the city was captured in 2013 by the Syrian opposition and then by the Islamic State. ISIS made the city its capital in 2014. As a result, the city was hit by airstrikes from the Syrian government, Russia, the United States, and several other countries. Most non-Sunni religious structures in the city were destroyed by ISIS, most notably the Shia Uwais al-Qarni Mosque, while others were converted into Sunni mosques. On 17 October 2017, following a lengthy battle that saw massive destruction to the city, the Syrian Democratic Forces (SDF) declared the liberation of Raqqa from the Islamic State to be complete.

Many states began to intervene against the Islamic State, in both the Syrian civil war and the War in Iraq (2013–2017), in response to its rapid territorial gains from its 2014 invasion of Iraq, universally condemned executions, human rights abuses and the fear of further spillovers of the Syrian civil war. In later years, there were also minor interventions by some states against IS-affiliated groups in Nigeria and Libya. All these efforts significantly degraded the Islamic State's capabilities by around 2019–2020. While moderate fighting continues in Syria, as of 2025, IS has been contained to a small area and force capability.

In mid-June 2014, Iran, according to American and British information, started flying drones over Iraq, and, according to Reuters, Iranian soldiers were in Iraq fighting IS. Simultaneously, the United States ordered a small number of troops to Iraq and started flying crewed aircraft over Iraq. In July 2014, according to the International Institute for Strategic Studies, Iran sent Sukhoi Su-25 aircraft to Iraq, and Hezbollah purportedly sent trainers and advisers to Iraq in order to help Shia militias to monitor IS's movements. In August 2014, the US and Iran separately began a campaign of airstrikes on IS targets in Iraq. Since then, fourteen countries in a US-led coalition have also executed airstrikes on IS in Iraq and in Syria. Starting from September 2014, United States began closely co-operating with Saudi Arabia and Jordan to wage a co-ordinated aerial bombing campaign against IS targets across Iraq and Syria.

On 15 June 2014 U.S. President Barack Obama ordered United States forces to be dispatched in response to the Northern Iraq offensive (June 2014) of the Islamic State (ISIL), as part of Operation Inherent Resolve. At the invitation of the Iraqi government, American troops went to assess Iraqi forces and the threat posed by ISIL.

In early August 2014, ISIL began its Northern Iraq offensive. On 5 August, the United States started supplying the Kurdish Peshmerga forces with weapons. On 8 August, the United States began airstrikes against ISIL positions in Iraq. Nine other countries also launched airstrikes against ISIL, more or less in concert with Kurdish and Iraqi government ground troops. By December 2017, ISIL had no remaining territory in Iraq, following the 2017 Western Iraq campaign.

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.

Combined Joint Task Force – Operation Inherent Resolve (CJTF–OIR) is a joint task force established by a U.S.-led international coalition against the Islamic State. Its stated aim is to "degrade and destroy" the Islamic State. Led by United States Army Central (ARCENT), it is composed of military forces and personnel from over 30 countries.

Formed in October 2014 by United States Central Command, CJTF-OIR was intended to replace the ad hoc arrangements that had been established to coordinate operations against ISIL, following its rapid gains in Iraq in June. Operation Inherent Resolve included the US-led intervention in Iraq (2014–2021) and the American-led intervention in the Syrian Civil War. The current commander of the coalition is U.S. Army Brigadier General Kevin J. Lambert and the current Command Senior Enlisted Leader is U.S. Army Command Sergeant Major Robert M. Preusser Jr.

The Battle of Baghuz Fawqani was an offensive by the Syrian Democratic Forces (SDF), assisted by Combined Joint Task Force – Operation Inherent Resolve (CJTF-OIR) coalition airstrikes, artillery, and special forces personnel, that began on 9 February 2019 as part of the Deir ez-Zor campaign of the Syrian Civil War. The battle—which was composed of a series of ground assaults—took place in and around the Syrian town of Al-Baghuz Fawqani in the Middle Euphrates River Valley near the Iraq–Syria border, and was the territorial last stand of the Islamic State (IS) in eastern Syria.

After corralling IS forces into a densely populated cluster of hamlets and a tent city along the riverside within the first week, the SDF realised that a greater-than-anticipated number of civilians, most of whom were relatives of the what were now mostly foreign IS fighters, were still in the enclave. With CJTF-OIR oversight, the SDF took an incremental approach to the battle, launching assaults then pausing to allow surrendering fighters, hostages, and families to evacuate in order to minimize civilian casualties. The "trickle-out" strategy, coupled with stiff resistance by veteran Islamic State jihadists within a small dense area, prolonged the battle into a protracted siege. The SDF officially declared final victory over the IS in Baghuz Fawqani on 23 March, marking the end of IS-controlled territories in Syria.

The 2017 Western Iraq campaign was the final major military operation of the 2013–2017 war in Iraq, in the western province of Anbar, and on the border with Syria, with the goal of completely expelling IS forces from their last strongholds in Iraq.

The offensive followed the Hawija offensive by the Iraqi Government, and was also concurrent with several major offensives in Syria: the Syrian Democratic Forces' Deir ez-Zor offensive, and the Syrian Government's Battle of Deir ez-Zor and Eastern Syria campaign on the opposite side of the Al-Qa'im border crossing.

On 30 September 2015, Russia launched a military intervention in Syria after a request by the regime of Bashar al-Assad for military support in its fight against the Syrian opposition and Islamic State (IS) in the Syrian civil war. The intervention began with extensive air strikes across Syria, focused on strongholds of opposition factions such as the Free Syrian Army, the Revolutionary Command Council, and Sunni militant groups comprising the Army of Conquest coalition. In line with the Assad regime's rhetoric, Syrian military chief Ali Abdullah Ayoub depicted Russian airstrikes as part of a general campaign against "terrorism." Russian special operations forces, military advisors and private military contractors like the Wagner Group were also sent to Syria to support the Assad regime, which was on the verge of collapse. Prior to the intervention, Russian involvement had included diplomatic support for Assad and billions of dollars' worth of arms and equipment for the Syrian Armed Forces. In December 2017, the Russian government announced that its troops would be deployed to Syria permanently.

At the onset of the intervention, the Syrian government controlled only 26% of Syrian territory. Although Russia initially portrayed its intervention as a "war against terrorism" solely targeting the Islamic State, Russia employed scorched-earth methods against civilian areas and Syrian opposition strongholds opposed to IS and Al-Qaeda. Weeks after the intervention began, Russian officials disclosed that President Vladimir Putin's chief objectives were maintaining the allied Ba'athist government in Damascus and capturing territories from American-backed Free Syrian militias, with a broader geo-political objective of rolling back U.S. influence. In a televised interview in October 2015, Putin said that the military operation had been thoroughly prepared in advance. He defined Russia's goal in Syria as "stabilising the legitimate power in Syria and creating the conditions for political compromise". In 2016 alone, more than 80% of Russian aerial attacks targeted opposition militias fighting the Islamic State. Despite Russia's extensive bombing of opposition strongholds, the territory under the Assad regime's actual control shrank from 26% of Syria in 2015 to 17% in early 2017.

The War in Iraq (2013–2017) was an armed conflict between Iraq and its allies and the Islamic State. Following December 2013, the insurgency escalated into a full-scale war following clashes in parts of western Iraq, which culminated in the Islamic State offensive into Iraq in June 2014, leading to the capture of the cities of Mosul, Tikrit and other cities in western and northern Iraq by the Islamic State. Between 4–9 June 2014, the city of Mosul was attacked and later fell; following this, Prime Minister Nouri al-Maliki called for a national state of emergency on 10 June. However, despite the security crisis, Iraq's parliament did not allow Maliki to declare a state of emergency; many legislators boycotted the session because they opposed expanding the prime minister's powers. Ali Ghaidan, a former military commander in Mosul, accused al-Maliki of being the one who issued the order to withdraw from the city of Mosul. At its height, ISIL held 56,000 square kilometers of Iraqi territory, containing 4.5 million citizens.

The war resulted in the forced resignation of al-Maliki in 2014, as well as an airstrike campaign by the United States and a dozen other countries in support of the Iraqi military, participation of American and Canadian troops (predominantly special forces) in ground combat operations, a $3.5 billion U.S.-led program to rearm the Iraqi security forces, a U.S.-led training program that provided training to nearly 200,000 Iraqi soldiers and police, the participation of the military of Iran, including troops as well as armored and air elements, and military and logistical aid provided to Iraq by Russia. On 9 December 2017, Prime Minister Haider al-Abadi announced victory over the Islamic State. The Islamic State switched to guerrilla "hit and run" tactics in an effort to undermine the Iraqi government's effort to eradicate it. This conflict is interpreted by some in Iraq as a spillover of the Syrian civil war. Other Iraqis and observers see it mainly as a culmination of long-running local sectarianism, exacerbated by the 2003–2011 Iraq War, the subsequent increase in anti-Sunni sectarianism under Prime Minister al-Maliki, and the ensuing bloody crack-down on the 2012–2013 Iraqi protests.

Islamic terrorism is a form of religious terrorism carried out by fundamentalist militant Islamists and Islamic extremists with the aim of achieving various political or religious objectives, such as jihad.

Since at least the 1990s, Islamist terrorist incidents have occurred around the world and targeted both Muslims and non-Muslims. Most attacks have been concentrated in Muslim-majority countries, with studies finding 80–90% of terrorist victims to be Muslim. The annual number of fatalities from terrorist attacks grew sharply from 2011 to 2014, when it reached a peak of 33,438, before declining to 13,826 in 2019. From 1979 to April 2024, five Islamic extremist groups—the Taliban, Islamic State, Boko Haram, al-Shabaab, and al-Qaeda—were responsible for more than 80% of all victims of Islamist terrorist attacks. In some of the worst-affected Muslim-majority regions, these terrorists have been met by armed, independent resistance groups. Islamist terrorism has also been roundly condemned by prominent Islamic figures and groups.