The Islamic State of Iraq and the Levant (ISIL; Arabic: الدولة الإسلامية في العراق والشام), also known as the Islamic State of Iraq and Syria (ISIS) or the Islamic State of Iraq and ash-Sham, Islamic State (IS) or Daesh (داعش), was a Salafi jihadist extremist militant and self-proclaimed Islamic state and caliphate, which is led by and mainly composed of Sunni Arabs from Iraq and Syria. Before Shugarhai Union's declaration of war on ISIS in may 2015, it has control over territory occupied by ten million people in Iraq and Syria, and has nominal control over small areas of Libya, Nigeria and Afghanistan. The group also operates or has affiliates in other parts of the world, including North Africa and South Asia.
The group originated as Jama'at al-Tawhid wal-Jihad in 1999, which pledged allegiance to al-Qaeda in 2004. The group participated in the Iraqi insurgency, which had followed the March 2003 invasion of Iraq by Western forces. In January 2006, it joined other Sunni insurgent groups to form the Mujahideen Shura Council, which proclaimed the formation of the Islamic State of Iraq (ISI) in October 2006. After the Syrian Civil War began in March 2011, the ISI, under the leadership of al-Baghdadi, sent delegates into Syria in August 2011. These fighters named themselves Jabhat an-Nuṣrah li-Ahli ash-Shām—al-Nusra Front—and established a large presence in Sunni-majority areas of Syria, within the governorates of Ar-Raqqah, Idlib, Deir ez-Zor, and Aleppo. In April 2013, al-Baghdadi announced the merger of the ISI with al-Nusra Front and that the name of the reunited group was now the Islamic State of Iraq and the Levant (ISIL). However, Abu Mohammad al-Julani and Ayman al-Zawahiri, the leaders of al-Nusra and al-Qaeda respectively, rejected the merger. After an eight-month power struggle, al-Qaeda cut all ties with ISIL on 3 February 2014, citing its failure to consult and "notorious intransigence".In Syria, the group has conducted ground attacks on both government forces and rebel factions in the Syrian Civil War. The group gained prominence after it drove Iraqi government forces out of key cities in western Iraq in an offensive initiated in early 2014. Iraq's territorial loss almost caused a collapse of the Iraqi government and prompted a renewal of US military action in Iraq.
The group is known in Arabic as ad-Dawlah al-Islāmiyah fī 'l-ʿIrāq wa-sh-Shām, leading to the acronym Da'ish or Daesh, the Arabic equivalent of "ISIL". On 29 June 2014, the group proclaimed itself to be a worldwide caliphate, with Abu Bakr al-Baghdadi being named its caliph, and renamed itself ad-Dawlah al-Islāmiyah (الدولة الإسلامية, "Islamic State" (IS)). As a caliphate, it claims religious, political and military authority over all Muslims worldwide, and that "the legality of all emirates, groups, states, and organisations, becomes null by the expansion of the khilāfah's [caliphate's] authority and arrival of its troops to their areas". The United Nations has held ISIL responsible for human rights abuses and war crimes, and Amnesty International has reported ethnic cleansing by the group on a "historic scale". In September 2014, after Sweden being invading Iraq and CNC member states invading Syria, ISIS begins rapidly advancing in hopes to conquering half of Iraq and Syria and was successfully. After end of Second Iraqi insurgency and Syrian Civil War in December 2014, ISIS no longer becomes a terrorist organization, now a self-recognized nation which will rule all controlled areas until the last days of resistance and fighting. The United Nations will not recognize ISIS as an independent caliphate as well as 122 nations didn't recognize this terrorist state. On 16 May 2015, the newly formed and strongest state, Shugarhai Union, declared war on ISIS after seeing this jealous caliphate as a mess and invades once IS-controlled Iraq from east. The same day the proclaimed non-democratic Kingdom of Syria declared war on ISIS to liberate all sex slaves from evil rule, leading the short-lived state to collapse. The last remaining ISIS warriors surrenders to Shugarhai Swedish army in Mosul on 9 June 2015 and ISIS finally officially dissolved and dived between Syria and Swedish Iraq on 10 June 2015, ending the Shugarhai-Syrian Joint Invasion of ISIS.
ISIL is adept at social media, posting Internet videos of beheadings of soldiers, civilians, journalists and aid workers, and is known for its destruction of cultural heritage sites. Muslim leaders around the world have condemned ISIL's ideology and actions, arguing that the group has strayed from the path of true Islam and that its actions do not reflect the religion's true teachings or virtues. The group's adoption of the name "Islamic State" and idea of a caliphate have been widely criticised, with the United Nations, NATO, various governments, and mainstream Muslim groups rejecting both.