What happened in history in Iran

In 116, Trajan captured the great city of Susa. He deposed the emperor Osroes I and put his own puppet ruler Parthamaspates on the throne.

The Huns conquered most of the Germanic Scythian barbarian tribes outside of the borders of the Roman Empire. They also launched invasions of both the Asian provinces of Rome and the Sasanian Empire in 375.

In 528, Justinian began his military campaigns to strengthen the weakening Roman Empire and by then, his tax ministers had applied some great tax reforms, which provided the king with enough finances to fund his military expeditions.

After passing from Italy to Syria, Palestine, and Iraq, plague reaches Iran.

A large epidemic of plague breaks out in Ctesiphon, the capital of the Sasanian Empire, killing more than 100,000 people.

The first known practical wind power plants were built in Sistan, an Eastern province of Persia (now Iran), from the 7th century. These "Panemone" were vertical axle windmills, which had long vertical drive shafts with rectangular blades. Made of six to twelve sails covered in reed matting or cloth material, these windmills were used to grind grain or draw up water, and were used in the gristmilling and sugarcane industries.

662 Damghan earthquake occurred on April 26, 662, in Umayyad Caliphate (now Iran), there were an estimated 40,000 deaths.

850 Iran earthquake occurred on July 15, 850, in Abbasid Caliphate (now Iran), there were an estimated 45,000 deaths.

The 856 Damghan earthquake or the 856 Qumis earthquake occurred on 22 December 856 (242 AH). The earthquake had an estimated magnitude of 7.9, and a maximum intensity of X (Extreme) on the Mercalli intensity scale. The earthquake's epicenter is estimated to be close to the city of Damghan, which was then the capital of the Persian province of Qumis. It caused approximately 200,000 deaths and is listed by the USGS as the sixth deadliest earthquake in recorded history.

Several earthquake catalogues and historical sources describe the 893 Ardabil earthquake as a destructive earthquake that struck the city of Ardabil, Iran, on 23 March 893. The magnitude is unknown, but the death toll was reported to be very large. The USGS, in their "List of Earthquakes with 50,000 or More Deaths", give an estimate that 150,000 were killed, which would make it the ninth deadliest earthquake in history.

Sahib ibn Abbad Library-Rey- 10th century- The Iranian Grand Vizier to Buyid rulers established a legendary public library holding around 200,000 volumes. Ibn Abbad who was so proud of this great collection of books once refused the invitation of Samanid rulers to become their Grand Vizier in Bukhara, giving the excuse of attachment to his books that would need around 400 camels to carry on. The library was partially destroyed in 1029 by the troops of the Ghaznavids. As evidence to a large amount of the resources, some scholars claimed that just the library catalogue was equal to 10 volumes.

The 1990 Manjil–Rudbar earthquake occurred on June 21 at 00:30:14 local time in northern Iran. The shock had a moment magnitude of 7.4 and a Mercalli Intensity of X (Extreme). Widespread damage occurred to the northwest of the capital city of Tehran, including the cities of Rudbar and Manjil. The National Geophysical Data Center estimated that $8 billion in damage occurred in the affected area. Other earthquake catalogs presented estimates of the loss of life in the range of 35,000–50,000, with a further 60,000–105,000 that were injured.

1042 Tabriz earthquake occurred on November 4, 1042, in Abbasid Caliphate (now Iran), there were an estimated 50,000 deaths.

1101 Khorasan earthquake occurred in 1101, in Great Seljuq Empire (now Iran), there were an estimated 60,000 deaths.

Politics in the 13th-century eastern Mediterranean were complex, with numerous powerful and interested parties. The French were led by the very devout Louis IX of France and his ambitiously expansionist brother Charles I of Naples. Communication with the Mongols was hindered by the enormous distances involved. Louis sent an embassy to the Mongols in Iran in 1249 seeking a Franco-Mongol alliance.

Rab'-e Rashidi Library-Maragheh-14th century: Rashid al-Din Hamadani, the Iranian author of Universal History and the Grand Vizier of Sultan Ghazan, was a talented founder of charitable Rab'-e Rashidi Complex and Library. He has elaborated the conditions of using the library resources in a remaining valuable Deed for Endowment (Vaghfnameh) which is of great importance in regards to the applied administrative procedures for running the libraries during the Islamic period: “This public library (Dar al-Masahef) shall deliver service to researchers for the purpose of studying and copying the resources. Books are allowed to be used within the library. Taking out the library books requires some refundable deposit equates to the half value of the borrowed item. The loan period is not allowed to exceed one month. The borrowed item shall get stamped by the librarian in order to be recognized as the property of the library”.

Sultan Selim I (1512–1520) dramatically expanded the Empire's eastern and southern frontiers by defeating Shah Ismail of Safavid Iran, in the Battle of Chaldiran.

The 1721 Tabriz earthquake occurred on April 26, with an epicenter near the city of Tabriz, Iran. It leveled some three-quarters of the city, The total number of casualties caused by the earthquake is between 8,000 and 250,000; it was most likely approximately 80,000.

The 1727 Tabriz earthquake occurred on 18 November with an epicenter near Tabriz in northwest Iran. The maximum felt intensity was VIII (Severe) on the Mercalli intensity scale, and there were an estimated 77,000 deaths. The only record for this earthquake comes from an account written in 1821 and it is very likely that the information for this earthquake refers instead to the 1721 Tabriz earthquake.

The 1727 Tabriz earthquake occurred on 18 November with an epicenter near Tabriz in northwest Iran. The maximum felt intensity was VIII (Severe) on the Mercalli intensity scale, and there were an estimated 77,000 deaths.

1755 Tabriz earthquake occurred on June 7, 1755, in Iran, there were an estimated 40,000 deaths.

1780 Tabriz earthquake occurred on January 8, 1780 in Iran, there were an estimated 200,000 deaths.

A Franco-Persian alliance was also formed between Napoleon and the Persian Empire of Fat′h-Ali Shah Qajar. It collapsed in 1807, when France and Russia themselves formed an unexpected alliance.

The Great Persian famine of 1870–1872 was a period of mass starvation and disease in Persia between 1870 and 1872. There is no agreement among scholars as to the total number of deaths during the famine, although it is believed that it resulted a considerable decline in Iran's population. The death toll from this famine is estimated to be in the range of 1.5 million people.

Ruhollah Musavi Khomeini, whose first name means "spirit of Allah", was born on 24 September 1902 in Khomeyn, Markazi Province.

The Persian famine of 1917–1919 was a period of widespread mass starvation and disease in Persia (Iran) under rule of Qajar dynasty during World War I. According to the estimates acknowledged by the mainstream view, about 2 million people died between 1917 and 1919 because of hunger and from diseases, which included cholera, plague and typhus, as well as influenza infected by 1918 flu pandemic.

After World War I, arrangements were made for him to study at the Islamic seminary in Esfahan, but he was attracted instead to the seminary in Arak. He was placed under the leadership of Ayatollah Abdul Karim Haeri Yazdi. In 1920, Khomeini moved to Arak and commenced his studies.

Finally in 1937 Iran and Iraq signed their first boundary treaty. The treaty established the waterway border on the eastern bank of the river except for a four-mile anchorage zone near Abadan, which was allotted to Iran and where the border ran along the thalweg.

The British and Soviets invaded neutral Iran to secure the Persian Corridor and Iran's oil fields. The invasion took place from 25 to 31 August.

His first political book, Kashf al-Asrar (Uncovering of Secrets) published in 1942, was a point-by-point refutation of Asrar-e hazar salih (Secrets of a Thousand Years), a tract written by a disciple of Iran's leading anti-clerical historian.

After the Partisans managed to endure and avoid these intense Axis attacks between January and June 1943, and the extent of Chetnik collaboration became evident, Allied leaders switched their support from Draža Mihailović to Tito. King Peter II, American President Franklin Roosevelt and British Prime Minister Winston Churchill joined Soviet Premier Joseph Stalin in officially recognising Tito and the Partisans at the Tehran Conference.

The most important conference of the year was soon afterward (28 November to 1 December) at Tehran (codenamed Eureka), where Churchill and Roosevelt met Stalin in the first of the "Big Three" meetings.

The Tehran Conference was a strategy meeting of Joseph Stalin, Franklin D. Roosevelt, and Winston Churchill from 28 November to 1 December 1943, after the Anglo-Soviet Invasion of Iran.

Soleimani was born on 11 March 1957, in the village of Qanat-e Malek, Kerman Province.

In January 1963, the Shah announced the "White Revolution", a six-point programme of reform calling for land reform, nationalization of the forests, the sale of state-owned enterprises to private interests, electoral changes to enfranchise women and allow non-Muslims to hold office, profit-sharing in industry, and a literacy campaign in the nation's schools. Some of these initiatives were regarded as dangerous, especially by the powerful and privileged Shi'a ulama (religious scholars), and as Westernizing trends by traditionalists (Khomeini viewed them as "an attack on Islam").

On 22 January 1963 Khomeini issued a strongly worded declaration denouncing the Shah and his plans. Two days later the Shah took an armored column to Qom, and delivered a speech harshly attacking the ulama as a class.

On the afternoon of 'Ashura (3 June 1963), Khomeini delivered a speech at the Feyziyeh madrasah drawing parallels between the Sunni Muslim caliph Yazid, who is perceived as a 'tyrant' by Shias, and the Shah, denouncing the Shah as a "wretched, miserable man," and warning him that if he did not change his ways the day would come when the people would offer up thanks for his departure from the country.

On 5 June 1963 (15 of Khordad) at 3:00 am, two days after this public denunciation of the Shah Mohammad Reza Pahlavi, Khomeini was detained in Qom and transferred to Tehran.

On 26 October 1964, Khomeini denounced both the Shah and the United States. This time it was in response to the "capitulations" or diplomatic immunity granted by the Shah to American military personnel in Iran.

Under the Tehran Price Agreement of 1971, the posted price of oil was increased and, due to a decline in the value of the US dollar relative to gold, certain anti-inflationary measures were enacted.

The Iran Blizzard of February 1972 was the deadliest blizzard in history. A week-long period of low temperatures and severe winter storms, lasting 3–9 February 1972, resulted in the deaths of approximately 4,000 people. Storms dumped more than 3 metres (9.8 ft) of snow across rural areas in northwestern, central and southern Iran.

Shah of Iran announces that the 1954 operating agreement between a consortium of oil companies and Iran will not be renewed when it expires in 1979. The consortium was formed in 1954 as a means to settle a dispute between a new ministry in Iran and the Anglo-Iranian Oil Company (AIOC). The consortium included Standard Oil of New Jersey, Standard Oil of California, SOCONY-Vacuum, the Texas Company, Gulf, Royal Dutch-Shell, the Compagnie Francaise de Petroles, and the AIOC.

Iran resumes petroleum exports.

Shah of Iran and Consortium members agree to nationalize all assets immediately in return for an assured 20-year supply of Iranian oil.

In 1975, he began working as a contractor for the Kerman Water Organization.

Manuel Contreras, Gerhard Mertins, Sergio Arredondo and an unidentified Brazilian general traveled to Tehran in 1976 to offer a collaboration to the Shah regime to kill Carlos in exchange for a large sum of money. It's not known what actually happened in the meetings.

On 19 August, in the southwestern city of Abadan, four arsonists barred the door of the Cinema Rex movie theatre and set it on fire. In what was the largest terrorist attack in history prior to the 11 September 2001 attacks, 422 people inside the theatre were burned to death. Khomeini immediately blamed the Shah and SAVAK for setting the fire. Due to the pervasive revolutionary atmosphere, the public also blamed the Shah for starting the fire, despite the government's insistence that they were uninvolved.

On 7 January 1978, an article ("Iran and Red and Black Colonization") appeared in the national daily Ettela'at newspaper. Written under a pseudonym by a government agent, it denounced Khomeini as a "British agent" and a "mad Indian poet" conspiring to sell out Iran to neo-colonialists and communists. Upon the publishing of the article, religious seminary students in the city of Qom, angered over the insult to Khomeini, clashed with police. According to the government, two were killed in the clash; according to the opposition, seventy were killed and over five hundred were injured. However, the casualty figures are different in different sources.

Student protests against the government of Reza Pahlavi, Shah of Iran, begin, touching off a wave of political unrest and violent clashes between police and demonstrators. Throughout the year increasing anti-Shah activities are led by Muslim fundamentalists seeking to establish a Muslim state.

According to the Shi'ite customs, memorial services (referred to as chehelom) are held forty days after a person's death. Encouraged by Khomeini (who declared that the blood of martyrs must water the "tree of Islam"), radicals pressured the mosques and moderate clergy to commemorate the deaths of the students, and used the occasion to generate protests. The informal network of mosques and bazaars, which for years had been used to carry out religious events, increasingly became consolidated as a coordinated protest organization. On 18 February, forty days after Qom clashes, demonstrations broke out in various different cities. The largest was in Tabriz, which descended into a full-scale riot. "Western" and government symbols such as cinemas, bars, state-owned banks, and police stations were set ablaze. Units of Imperial Iranian Army were deployed to the city to restore order, and the death toll, according to government was six, while Khomeini claimed hundreds were "martyred".

A series of escalating protests broke out in major cities, and deadly riots broke out in Isfahan where protesters fought for the release of Ayatollah Jalaluddin Taheri. Martial law was declared in the city on 11 August as symbols of Western culture and government buildings were burned, and a bus full of American workers was bombed. Due to his failure to stop the protests, Prime Minister Amuzegar offered his resignation.

The Shah increasingly felt that he was losing control of the situation and hoped to regain it through complete appeasement. He decided to appoint Jafar Sharif-Emami to the post of prime minister, himself a veteran prime minister. Emami was chosen due to his family ties to the clergy, but he had a reputation of corruption during his previous premiership. Under the Shah's guidance, Sharif-Emami effectively began a policy of "appeasing the opposition's demands before they even made them".

4 September was Eid-e-Fitr, the holiday celebrating the end of the month of Ramadan. A permit for an open air prayer was granted, in which 200,000–500,000 people attended. Instead, the clergy directed the crowd on a large march through the center of Tehran (the Shah reportedly watched the march from his helicopter, unnerved and confused). A few days later even larger protests took place, and for the first time protesters called for Khomeini's return and the establishment of an Islamic republic.

At midnight on 8 September, the Shah declared martial law in Tehran and 11 other major cities throughout the country. All street demonstrations were banned, and a night-time curfew was established. Tehran's martial law commander was General Gholam-Ali Oveissi, who was known for his severity against opponents.

On 9 September, 700 workers at Tehran's main oil refinery went on strike, and on 11 September the same occurred at refineries in five other cities.

On 13 September, central government workers in Tehran simultaneously went on strike.

Shah puts Iran under military rule. Muslim leader Noori was arrested in the crackdown of opposition groups.

By late October, a nationwide general strike was declared, with workers in virtually all major industries walking off their jobs, most damagingly in the oil industry and the print media. Special "strike committees" were set up throughout major industries to organize and coordinate the activities. The Shah did not attempt to crack down on strikers, but instead gave them generous wage increases.

On 5 November, demonstrations at University of Tehran became deadly after a fight broke out with armed soldiers. Within hours, Tehran broke out into a full-scale riot. Block after block of Western symbols such as movie theaters and department stores, as well as government and police buildings, were seized, looted, and burned. The British embassy in Tehran was partially burned and vandalized as well, and the American embassy nearly suffered the same fate (the event became known to foreign observers as "The Day Tehran Burned").

On 6 November, the Shah dismissed Sharif-Emami from the post of prime minister, and chose to appoint a military government in its place. The Shah chose General Gholam-Reza Azhari to be prime minister because of his mild-mannered approach to the situation. The cabinet he would choose was a military cabinet in name only and consisted primarily of civilian leaders.

On 2 December 1978, the Muharram protests began. Named for the Islamic month they began in, the Muharram protests were impressively huge and pivotal. Over two million protesters (many of whom were teenagers organized by the mullahs from the mosques of southern Tehran) took to the streets, crowding Shahyad Square. Protesters frequently went out at night, defying the set curfew, often taking to rooftops and shouting "Allahu-Akbar" (God is Great). According to one witness, many of the clashes on the street had an air of playfulness rather than seriousness, with security forces using "kid gloves" against the opposition (nevertheless, the government reported at least 12 opposition deaths).

As the days of Tasu'a and Ashura (10 and 11 December) approached, in order to prevent a deadly showdown the Shah began to draw back. In negotiations with Ayatollah Shariatmadari, the Shah ordered the release of 120 political prisoners and Karim Sanjabi, and on 8 December revoked the ban on street demonstrations. Permits were issued for the marchers, and troops were removed from the procession's path. In turn, Shariatmadari pledged that to make sure that there would be no violence during the demonstrations.On 10 and 11 December, the days of Tasu'a and Ashura, between six and nine million anti-shah demonstrators marched throughout Iran.

On 11 December, a dozen officers were shot dead by their own troops at Tehran's Lavizan barracks. Fearing further mutinies, many soldiers were returned to their barracks.Mashhad (the second largest city in Iran) was abandoned to the protesters, and in many provincial towns demonstrators were effectively in control.

The Shah began to search for a new prime minister, one who was a civilian and a member of the opposition. On 28 December, he secured an agreement with another major National Front figure, Shahpour Bakhtiar. Bakhtiar would be appointed prime minister (a return to civilian rule), while the Shah and his family would leave the country for a "vacation". His royal duties would be carried out by a Regency Council, and three months after his departure a referendum would be submitted to the people deciding on whether Iran would remain a monarchy or become a republic. A former opponent of the Shah, Bakhtiar became motivated to join the government because he was increasingly aware of Khomeini's intentions to implement hard-line religious rule rather than a democracy. Karim Sanjabi immediately expelled Bakhtiar from the National Front, and Bakhtiar was denounced by Khomeini (who declared that acceptance of his government was the equivalent of "obedience to false gods").

Soleimani joined the Revolutionary Guard (IRGC) in 1979 following the Iranian Revolution, which saw the Shah fall and Ayatollah Khomeini take power. Reportedly, his training was minimal, but he advanced rapidly. Early in his career as a guardsman, he was stationed in northwestern Iran, and participated in the suppression of a Kurdish separatist uprising in West Azerbaijan Province.

After the activity of the Dawa Party was banned by Saddam Hussein, Jamal fled, in 1979, across the border to Ahvaz in Iran, where the Iranians had set up a camp to train Iraqi dissidents, with the aim of undermining Saddam.

Khomeini was not allowed to return to Iran during the Shah's reign (as he had been in exile). On 16 January 1979, the Shah left the country (ostensibly "on vacation"), never to return.

Bakhtiar invited Khomeini back to Iran, with the intention of creating a Vatican-like state in the holy city of Qom, declaring that "We will soon have the honor of welcoming home the Ayatollah Khomeini". On 1 February 1979 Khomeini returned to Tehran in a chartered Air France Boeing 747. The welcoming crowd of several million Iranians was so large he was forced to take a helicopter after the car taking him from the airport was overwhelmed by an enthusiastic welcoming crowd.

Two weeks later, on Thursday, 1 February 1979, Khomeini returned in triumph to Iran, welcomed by a joyous crowd estimated (by the BBC) to be of up to five million people.

1 million Iranians march in Teheran in a show of support for the exiled Ayatollah Khomeini, fundamental leader.

On the day of his arrival Khomeini made clear his rejection of Bakhtiar's government in a speech promising, "I shall kick their teeth in. I appoint the government, I appoint the government in support of this nation". On 5 February at Khomeini's headquarters in the Refah School in southern Tehran, he declared a provisional revolutionary government, appointed opposition leader Mehdi Bazargan (from the religious-nationalist Freedom Movement, affiliated with the National Front) as his own prime minister, and commanded Iranians to obey Bazargan as a religious duty.

On 9 February, a rebellion of pro-Khomeini air force technicians broke out at the Doshan Tappeh Air Base. A unit of the pro-Shah Immortal Guards attempted to apprehend the rebels, and an armed battle broke out. Soon large crowds took to the streets, building barricades and supporting the rebels, while Islamic-Marxist guerillas with their weapons joined in support.

The final collapse of the provisional non-Islamist government came at 2 pm 11 February when the Supreme Military Council declared itself "neutral in the current political disputes... in order to prevent further disorder and bloodshed." All military personnel were ordered back to their bases, effectively yielding control of the entire country to Khomeini. Revolutionaries took over government buildings, TV and radio stations, and palaces of the Pahlavi dynasty, marking the end of the monarchy in Iran. Bakhtiar escaped the palace under a hail of bullets, fleeing Iran in disguise.

On 11 February, Khomeini appointed his own competing interim prime minister, Mehdi Bazargan, demanding, "since I have appointed him, he must be obeyed." It was "God's government," he warned, disobedience against him or Bazargan was considered a "revolt against God".

On 11 February, as revolt spread and armories were taken over, the military declared neutrality and the Bakhtiar regime collapsed.

On 30 and 31 March (Farvardin 10, 11) a referendum was held over whether to replace the monarchy with an "Islamic republic". Khomeini called for a massive turnout and only the National Democratic Front, Fadayan, and several Kurdish parties opposed the vote. The results showed that 98.2% had voted in favor of the Islamic Republic.

On 30 and 31 March 1979, a referendum to replace the monarchy with an Islamic Republic passed with 98% voting in favour of the replacement, with the question: "should the monarchy be abolished in favour of an Islamic Government?".

The Revolutionary Guard, or Pasdaran-e Enqelab, was established by Khomeini on 5 May 1979, as a counterweight both to the armed groups of the left, and to the Shah's military. The guard eventually grew into "a full-scale" military force,becoming "the strongest institution of the revolution."

On 22 October 1979, the United States admitted the exiled and ailing Shah into the country for cancer treatment. In Iran, there was an immediate outcry, with both Khomeini and leftist groups demanding the Shah's return to Iran for trial and execution.

In November 1979, the new constitution of the Islamic Republic was adopted by national referendum.

On 4 November, a group of Iranian college students calling themselves the Muslim Student Followers of the Imam's Line, took control of the American Embassy in Tehran, holding 52 embassy staff hostage for 444 days – an event known as the Iran hostage crisis.

On 4 November 1979 youthful Islamists, calling themselves Muslim Student Followers of the Imam's Line, invaded the US embassy compound in Tehran and seized its staff. Revolutionaries were angry because of how the Shah had fled abroad while the Embassy-based American CIA and British intelligence organized a coup d'état to overthrow his nationalist opponent who was a legitimately elected official. The students held 52 American diplomats hostage for 444 days, which played a role in helping to pass the constitution, suppressing moderates, and otherwise radicalising the revolution.

The provisional government fell shortly after American Embassy officials were taken hostage on 4 November 1979. Bazargan's resignation was received by Khomeini without complaint, saying "Mr. Bazargan ... was a little tired and preferred to stay on the sidelines for a while." Khomeini later described his appointment of Bazargan as a "mistake."

On November 4, 1979, a group of Iranian students took over the U.S. Embassy in Tehran. The students belonged to the Muslim Student Followers of the Imam's Line and were in support of the Iranian Revolution.

Iran cancels all contracts with U.S. oil companies.

The US remained officially neutral after Iraq's invasion of Iran in 1980, which became the Iran–Iraq War, although it provided resources, political support, and some "non-military" aircraft to Iraq.

On 4 February 1980, Abolhassan Banisadr was elected as the first president of Iran.

On April 7, 1980, Carter issued Executive Order 12205, imposing economic sanctions against Iran and announced further measures being taken by members of his cabinet and the American government that he deemed necessary to ensure a safe release.

On April 24, 1980, Carter ordered Operation Eagle Claw to try to free the hostages. The mission failed, leaving eight American servicemen dead and causing the destruction of two aircraft.

Iraq launched a full-scale invasion of Iran on 22 September 1980. The Iraqi Air Force launched surprise air strikes on ten Iranian airfields with the objective of destroying the Iranian Air Force. The attack failed to damage the Iranian Air Force significantly; it damaged some of Iran's airbase infrastructure, but failed to destroy a significant number of aircraft.

On 22 September, a prolonged battle began in the city of Khorramshahr, eventually leaving 7,000 dead on each side. Reflecting the bloody nature of the struggle, Iranians came to call Khorramshahr "City of Blood".

Iraq launched a full-scale invasion of Iran, beginning the Iran–Iraq War (September 1980 – August 1988).

On 22 September 1980, when Saddam Hussein launched an invasion of Iran, setting off the Iran–Iraq War (1980–1988), Soleimani joined the battlefield serving as the leader of a military company, consisting of men from Kerman whom he assembled and trained.

By 30 September, the Iraqis had managed to clear the Iranians from the outskirts of the city. The next day, the Iraqis launched infantry and armoured attacks into the city. After heavy house-to-house fighting, the Iraqis were repelled.

On 14 October, the Iraqis launched a second offensive. The Iranians launched a controlled withdrawal from the city, street by street.

In November, Saddam ordered his forces to advance towards Dezful and Ahvaz, and lay sieges to both cities. However, the Iraqi offensive had been badly damaged by Iranian militias and air power. Iran's air force had destroyed Iraq's army supply depots and fuel supplies, and was strangling the country through an aerial siege.

By 24 October, most of the city was captured, and the Iranians evacuated across the Karun River. Some partisans remained, and fighting continued until 10 November.

On 7 December, Hussein announced that Iraq was going on the defensive. By the end of 1980, Iraq had destroyed about 500 Western-built Iranian tanks and captured 100 others.

On 5 January 1981, Iran had reorganised its forces enough to launch a large-scale offensive, Operation Nasr (Victory).

In Battle of Dezful, the Iranian armoured divisions were nearly wiped out in one of the biggest tank battles of the war. When the Iranian tanks tried to manoeuvre, they became stuck in the mud of the marshes, and many tanks were abandoned. The Iraqis lost 45 T-55 and T-62 tanks, while the Iranians lost 100–200 Chieftain and M-60 tanks. Reporters counted roughly 150 destroyed or deserted Iranian tanks , and also 40 Iraqi tanks. 141 Iranians were killed during the battle.