Arab separatism in Khuzestan was a decades-long separatist Arab movement in the western part of the Khuzestan Province in Iran.
From the 1920s to the early 2020s, tensions have often resulted in violence and attempted separatism, including the insurgency in 1979, unrest in 2005, terrorist bombings in 2005–2006, protests in 2011, assassinations in 2017, and the 2018 Ahvaz military parade attack.

Iran officially denied any discrimination or the existence of conflict within the country. It drew strong criticism from human rights organizations including accusations of ethnic discrimination and ethnic cleansing.

Demographic background
Khuzestan is inhabited by many different ethnic groups including Iranian Arabs, Bakhtiari, Kurds, Qashqai people, Persians, and Armenians. The majority of Arabs in Khuzestan are Shia Muslims. Both the urban and rural areas of Khuzestan are populated with Arabs, Persians, and Lurs, who often intermarry.

History
Sheikh Khazal rebellion
Officially within Persian territory, the western region of Khuzestan functioned as an autonomous emirate known as Arabistan for two decades until 1924. From 1922 to 1924, tensions grew due to the rising power of Reza Khan, who later became the Shah of Iran (as Reza Shah), due to his increasingly negative attitude toward tribal autonomies in Iran, his attempts to extract higher taxes, and reduce the authority of Khazal Khan, the Sheikh of Mohammerah and the tribal leader of Arabistan. In response, Sheik Khazal initiated the short-lived Sheikh Khazal rebellion which peaked in November 1924 and was crushed by the newly installed Pahlavi dynasty. At least 115 casualties were sustained. Arabistan was dissolved by Reza Shah's government in 1925, along with other autonomous regions of Persia.
1979 insurgency
The 1979 Khuzestan insurgency erupted in the aftermath of the Iranian Revolution, fed by demands of autonomy for Khuzestan. The uprising was quelled by Iranian security forces, resulting in more than a hundred combined casualties from both sides. The Iranian crackdown in response to the uprising provoked the initiation of the Iranian Embassy siege of 1980 in London by an Arab separatist group called the Democratic Revolutionary Front for the Liberation of Arabistan (DRFLA). The terrorists initially demanded autonomy for Khuzestan and later demanded the release of 91 of their comrades held in Iranian jails.
Civil unrest and insurgency (1999–2020)
ASMLA establishment
In 1999, Habib Yabar, Habib Asewad Kaabi, and Ahmad Mola Nissi established the Arab Struggle Movement for the Liberation of Ahwaz (ASMLA) in Europe to advocate for an independent Arab state in Khuzestan and has committed acts of terrorism and assassinations in support of this goal. The group is financed and sponsored by Saudi Arabia.
Civil unrest (2005–2015) On 15 April 2005, civil unrest broke out in Ahvaz and surrounding towns, lasting for four days. Initially, the Iranian Interior Ministry stated that only one person had been killed, but an official at an Ahvaz hospital alleged between 15 and 20 casualties.
Subsequently, a series of bombings were carried out in Ahvaz and other cities in Iran in late 2005 and early 2006, which were blamed upon Sunni Arab separatist groups of Khuzestan.
The 2011 Khuzestan protests, known among protesters as the Ahvaz Day of Rage, erupted on 15 April 2011 in Iranian Khuzestan to mark the anniversary of the 2005 Ahvaz unrest, and as a response to the regional Arab Spring. The protests lasted for four days, resulted in 12 to 15 protesters killed, and many wounded and arrested; one security officer was killed and another wounded. Crackdown on Arab political opposition in the area continued since with arrests and executions. Four Ahwazi men were executed in Iran in June 2012 in relation to the 2011 unrest. The crackdown on Arab Sunni opposition has been condemned by the Human Rights Watch, Amnesty International, and others.
In 2013, bombings were carried out in Ahvaz, alleged to have been committed by the ASMLA.





