Hadrian surrendered Trajan's conquests in Mesopotamia, considering them to be indefensible. There was almost a war with Vologases III of Parthia around 121, but the threat was averted when Hadrian succeeded in negotiating a peace.
During Sassanid Empire collection of books drew the attention of rulers and priests. Priests intended to gather the spread and unknown Zoroastrianism manuscripts and rulers were keen on collection and promotion of science. Many Zoroastrian temples were accompanied by a library that was designed to collect and promote religious content.
Gaius Julius Priscus and, later on, his own brother Marcus Julius Philippus, also known as Philip the Arab, stepped in at this moment as the new Praetorian Prefects Gordian would then start a second campaign. Around February 244, the Sasanians fought back fiercely to halt the Roman advance to Ctesiphon. The eventual fate of Gordian after the battle is unclear. Sasanian sources claim that a battle occurred (Battle of Misiche) near modern Fallujah (Iraq) and resulted in a major Roman defeat and the death of Gordian III.
The Sassanid King Bahram II, limited by internal opposition and his troops occupied with a campaign in modern-day Afghanistan, could not effectively defend his territory. The Sasanians, faced with severe internal problems, could not mount an effective coordinated defense at the time; Carus and his army may have captured the Sasanian capital of Ctesiphon. The victories of Carus avenged all the previous defeats suffered by the Romans against the Sassanids, and he received the title of Persicus Maximus.
The Akkadian-speaking people (the earliest historically-attested Semitic-speaking people) who would eventually found Assyria appear to have entered Mesopotamia at some point during the latter 4th millennium BC (c. 3500–3000 BC), eventually intermingling with the earlier Sumerian-speaking population, who came from northern Mesopotamia, with Akkadian names appearing in the written record from as early as the 29th century BC.
Maurice, who meanwhile succeeded Tiberius, intervened in a Persian civil war, placed the legitimate Khosrau II back on the throne, and married his daughter to him. Maurice's treaty with his new brother-in-law enlarged the territories of the Empire to the East and allowed the energetic Emperor to focus on the Balkans.
The first libraries in Muslim lands were not necessarily for the public, but they contained much knowledge. The need for the preservation of the Quran, the Muslim holy book, and the Traditions of Muhammad, the prophet of Islam, is what led to the collection of writings in the Muslim world. Where traditions and history used to be oral, the need to preserve the words of the Quran necessitated a method of preserving the words by some means other than orally. Mosques that were the center of everything in a Muslim society's day-to-day life became also libraries that stored and preserved all knowledge, from the Quran to books on religion, philosophy and science. By the 8th century, first Iranians and then Arabs had imported the craft of papermaking from China, with a paper mill already at work in Baghdad in 794 then called Bagdatikos.
By the 9th century, public libraries started to appear in many Islamic cities. They were called "halls of Science" or dar al-'ilm. They were each endowed by Islamic sects with the purpose of representing their tenets as well as promoting the dissemination of secular knowledge. In Baghdad, the library was known as the House of Wisdom.
The Library of Abu-Nasr Shapur Ibn Ardeshir- Baghdad- 10th century: Abu-Nasr who was a Daylamites’ Minister, founded a mega well-known public library in Baghdad that is claimed to hold 10 thousand volumes. The library was destroyed during Baghdad's big fire.
Al-Ḥākim's most rigorous and consistent opponent was the Abbāsid Caliphate in Baghdad, which sought to halt the influence of Ismailism. This competition led to the Baghdad Manifesto of 1011, in which the Abbāsids claimed that the line al-Ḥākim represented did not legitimately descend from 'Alī. Al-Ḥākim's reign was characterized by general unrest. The Fatimid army was troubled by a rivalry between two opposing factions, the Turks and the Berbers.
During the 3rd millennium BC, a very intimate cultural symbiosis developed between the Sumerians and the Akkadians throughout Mesopotamia, which included widespread bilingualism. The influence of Sumerian (a language isolate) on Akkadian, and vice versa, is evident in all areas, from lexical borrowing on a massive scale, to syntactic, morphological, and phonological convergence. This has prompted scholars to refer to Sumerian and Akkadian in the third millennium BC as a sprachbund. Akkadian gradually replaced Sumerian as the spoken language of Mesopotamia somewhere after the turn of the 3rd and the 2nd millennium BC (the exact dating being a matter of debate), although Sumerian continued to be used as a sacred, ceremonial, literary, and scientific language in Mesopotamia until the 1st century AD, as did the use of the Akkadian cuneiform.
The first libraries consisted of archives of the earliest form of writing – the clay tablets in cuneiform script discovered in temple rooms in Sumer, some dating back to 2600 BC.
The cities of Assur, Nineveh, Gasur, and Arbela together with a number of other towns and cities, existed since at least before the middle of the 3rd millennium BC (c. 2600 BC), although they appear to have been Sumerian-ruled administrative centers at this time, rather than independent states.
Of the early history of the kingdom of Assyria, little is known. In the Assyrian King List, the earliest king recorded was Tudiya. According to Georges Roux, he would have lived in the mid 25th century BC, i.e. c. 2450 BC. In archaeological reports from Ebla, it appeared that Tudiya's activities were confirmed with the discovery of a tablet where he concluded a treaty for the operation of a karum (trading colony) in the Eblaite territory, with "king" Ibrium of Ebla (who is now known to have been the vizier of Ebla for king Ishar-Damu).
Tudiya was succeeded on the list by Adamu, the first known reference to the Semitic name Adam and then a further thirteen rulers (Yangi, Suhlamu, Harharu, Mandaru, Imsu, Harsu, Didanu, Hanu, Zuabu, Nuabu, Abazu, Belus and Azarah). Nothing concrete is yet known about these names, although it has been noted that a much later Babylonian tablet listing the ancestral lineage of Hammurabi, the Amorite king of Babylon, seems to have copied the same names from Tudiya through Nuabu, though in a heavily corrupted form.
Assyria seems to have already been firmly involved in trade in Asia Minor by this time; the earliest known reference to Anatolian Karu in Hatti was found on later cuneiform tablets describing the early period of the Akkadian Empire (c. 2350 BC). On those tablets, Assyrian traders in Burushanda implored the help of their ruler, Sargon the Great, and this appellation continued to exist throughout the Assyrian Empire for about 1,700 years. The name "Hatti" itself even appears in later accounts of his grandson, Naram-Sin, campaigning in Anatolia.
During the Akkadian Empire (2334–2154 BC), the Assyrians, like all the Akkadian-speaking Mesopotamians (and also the Sumerians), became subject to the dynasty of the city-state of Akkad, centered in central Mesopotamia. The Akkadian Empire founded by Sargon the Great claimed to encompass the surrounding "four-quarters". The region of Assyria, north of the seat of the empire in central Mesopotamia, had also been known as Subartu by the Sumerians, and the name Azuhinum in Akkadian records also seems to refer to Assyria proper. The Sumerians were eventually absorbed into the Akkadian (Assyro-Babylonian) population.
Most of Assyria briefly became part of the Neo-Sumerian Empire (or 3rd dynasty of Ur) founded in c. 2112 BC. Sumerian domination extended as far as the city of Ashur but appears not to have reached Nineveh and the far north of Assyria. One local ruler (shakkanakku) named Zāriqum (who does not appear on any Assyrian king list) is listed as paying tribute to Amar-Sin of Ur. Ashur's rulers appear to have remained largely under Sumerian domination until the mid-21st century BC (c. 2050 BC); the king list names Assyrian rulers for this period and several are known from other references to have also borne the title of shakkanakka or vassal governors for the neo-Sumerians.
The most important dispute was over the Shatt al-Arab waterway. Iran repudiated the demarcation line established in the Anglo-Ottoman Convention of Constantinople of November 1913. Iran asked the border to run along the thalweg, the deepest point of the navigable channel.
In approximately 2025 BC, a king named Puzur-Ashur I came to the throne of Assyria, and there is some debate among scholars as to whether he was the founder of a new dynasty or a descendant of Ushpia. He is mentioned as having conducted building projects in Assur, and he and his successors took the title Išši’ak Aššur (meaning viceroy of Ashur). From this time Assyria began to expand trading colonies called Karum into Hurrian and Hattian lands in Anatolia.
The Anglo–Iraqi War occurred from 2 to 31 May 1941, was a British-led Allied military campaign against Iraq under Rashid Ali, who had seized power during the Second World War with assistance from Germany and Italy. The campaign resulted in the downfall of Ali's government, the re-occupation of Iraq by the United Kingdom, and the return to power of the Regent of Iraq, Prince 'Abd al-Ilah, an ally to the United Kingdom.
In addition to the expansions into Anatolia Ilu-shuma (C. 1995–1974 BC) (Middle chronology) appears to have conducted military campaigns in southern Mesopotamia, either in the conquest of the city-states of the south or in order to protect his fellow Akkadian-speakers from incursions by Elamites from the east and/or Amorites from the west – "The freedom of the Akkadians and their children I established. I purified their copper. I established their freedom from the border of the marshes and Ur and Nippur, Awal, and Kismar, Der of the god Ishtaran, as far as Assur".
The Organization of the Petroleum Exporting Countries (OPEC), was founded by five oil-producing countries at a Baghdad conference on September 14, 1960. The five founding members of OPEC were Venezuela, Iraq, Saudi Arabia, Iran, and Kuwait.
Ilu-shuma was succeeded by another powerful king, the long-reigning Erishum I (1973–1934 BC) who is notable for one of the earliest examples of written legal codes and introducing the limmu (eponym) lists that were to continue throughout Assyrian history. He is known to have greatly expanded Assyrian trading colonies in Anatolia, with twenty-one being listed during his reign. These Karum traded in: tin, textiles, lapis lazuli, iron, antimony, copper, bronze, wool, and grain, in exchange for gold and silver. Erishum also kept numerous written records and conducted major building works in Assyria, including the building of temples to Ashur, Ishtar, and Adad.
Iraq nationalizes Iraq Petroleum Company's (IPC) concession owned by British Petroleum, Royal Dutch-Shell, Compagnie Francaise des Petroles, Mobil, and Standard Oil of New Jersey (now Exxon). The concessions were valued at over one billion dollars.
The chain of events began with the death of Mostafa Khomeini, chief aide and eldest son of Ruhollah Khomeini. He mysteriously died at midnight on 23 October 1977 in Najaf, Iraq. SAVAK and Iraqi government declared heart attack as the cause of death, though many believed his death was attributed to SAVAK. Khomeini remained silent after the incident, but in Iran with the spread of the news there was a wave of protest in several cities and mourning ceremonies in major cities were held.
Ayatollah Ruhollah Khomeini called on Iraqis to overthrow the Ba'ath government, which was received with considerable anger in Baghdad. On 17 July 1979, despite Khomeini's call, Saddam gave a speech praising the Iranian Revolution and called for an Iraqi-Iranian friendship based on non-interference in each other's internal affairs. When Khomeini rejected Saddam's overture by calling for Islamic revolution in Iraq, Saddam was alarmed.
on 17 September 1980, Iraq suddenly abrogated the Algiers Protocol following the Iranian revolution. Saddam Hussein claimed that the Islamic Republic of Iran refused to abide by the stipulations of the Algiers Protocol and, therefore, Iraq considered the Protocol null and void. Five days later, the Iraqi army crossed the border.
The next day, Iraq launched a ground invasion along a front measuring 644 km (400 mi) in three simultaneous attacks. The invasion's purpose, according to Saddam, was to blunt the edge of Khomeini's movement and to thwart his attempts to export his Islamic revolution to Iraq and the Persian Gulf states.
Though the Iraqi air invasion surprised the Iranians, the Iranian air force retaliated the day after with a large-scale attack against Iraqi air bases and infrastructure in Operation Kaman 99. Groups of F-4 Phantom and F-5 Tiger fighter jets attacked targets throughout Iraq, such as oil facilities, dams, petrochemical plants, and oil refineries, and included Mosul Airbase, Baghdad, and the Kirkuk oil refinery.
On 24 September, the Iranian Navy attacked Basra, Iraq, destroying two oil terminals near the Iraqi port Faw, which reduced Iraq's ability to export oil. The Iranian ground forces (primarily consisting of the Revolutionary Guard) retreated to the cities, where they set up defences against the invaders.
The Iraqi Air Force, badly damaged by the Iranians, was moved to the H-3 Airbase in Western Iraq, near the Jordanian border and away from Iran. However, on 3 April 1981, the Iranian air force used eight F-4 Phantom fighter bombers, four F-14 Tomcats, three Boeing 707 refuelling tankers, and one Boeing 747 command plane to launch a surprise attack on H3, destroying 27–50 Iraqi fighter jets and bombers.
At a cabinet meeting in Baghdad, Minister of Health Riyadh Ibrahim Hussein suggested that Saddam could step down temporarily as a way of easing Iran towards a ceasefire, and then afterwards would come back to power. Saddam, annoyed, asked if anyone else in the Cabinet agreed with the Health Minister's idea. When no one raised their hand in support, he escorted Riyadh Hussein to the next room, closed the door, and shot him with his pistol. Saddam returned to the room and continued with his meeting.
On June 20, 1982, Saddam announced that he wanted to sue for peace and proposed an immediate ceasefire and withdrawal from Iranian territory within two weeks. Khomeini responded by saying the war would not end until a new government was installed in Iraq and reparations paid. He proclaimed that Iran would invade Iraq and would not stop until the Ba'ath regime was replaced by an Islamic republic.
On 16 July, Iran tried again further north and managed to push the Iraqis back. However, only 13 km (8.1 mi) from Basra, the poorly equipped Iranian forces were surrounded on three sides by Iraqis with heavy weaponry. Some were captured, while many were killed. Only a last-minute attack by Iranian AH-1 Cobra helicopters stopped the Iraqis from routing the Iranians.They were successful in defeating the Iranian breakthroughs, but suffered heavy losses.
After Iran's failure in Operation Ramadan, they carried out only a few smaller attacks. During Operation Muslim ibn Aqil (1–7 October), Iran recovered 150 km2 (58 sq mi) of disputed territory straddling the international border and reached the outskirts of Mandali before being stopped by Iraqi helicopter and armoured attacks.
In Operation Fajr al-Nasr (Before the Dawn/Dawn of Victory), launched 6 February 1983, the Iranians shifted focus from the southern to the central and northern sectors. Employing 200,000 "last reserve" Revolutionary Guard troops, Iran attacked along a 40 km (25 mi) stretch near al-Amarah, Iraq, about 200 km (120 mi) southeast of Baghdad, in an attempt to reach the highways connecting northern and southern Iraq. The attack was stalled by 60 km (37 mi) of hilly escarpments, forests, and river torrents blanketing the way to al-Amarah, but the Iraqis could not force the Iranians back. Iran directed artillery on Basra, Al Amarah, and Mandali.
By 27 February, they had captured the island, but suffered catastrophic helicopter losses to IRAF. On that day, a massive array of Iranian helicopters transporting Pasdaran troops were intercepted by Iraqi combat aircraft (MiGs, Mirages and Sukhois).
From early 1983–1984, Iran launched a series of four Valfajr (Dawn) Operations (that eventually numbered to 10). During Operation Dawn-1, in early February 1983, 50,000 Iranian forces attacked westward from Dezful and were confronted by 55,000 Iraqi forces. The Iranian objective was to cut off the road from Basra to Baghdad in the central sector.
During Operation Dawn-2, the Iranians directed insurgency operations by proxy in April 1983 by supporting the Kurds in the north. With Kurdish support, the Iranians attacked on 23 July 1983, capturing the Iraqi town of Haj Omran and maintaining it against an Iraqi poison gas counteroffensive. This operation incited Iraq to later conduct indiscriminate chemical attacks against the Kurds.
The focus of Operation Dawn-4 in September 1983 was the northern sector in Iranian Kurdistan. Three Iranian regular divisions, the Revolutionary Guard, and Kurdistan Democratic Party (KDP) elements amassed in Marivan and Sardasht in a move to threaten the major Iraqi city Suleimaniyah. Iran's strategy was to press Kurdish tribes to occupy the Banjuin Valley, which was within 45 km (28 mi) of Suleimaniyah and 140 km (87 mi) from the oilfields of Kirkuk. To stem the tide, Iraq deployed Mi-8 attack helicopters equipped with chemical weapons and executed 120 sorties against the Iranian force, which stopped them 15 km (9.3 mi) into Iraqi territory. 5,000 Iranians and 2,500 Iraqis died.
Operation Kheibar began on 24 February with Iranian infantrymen crossing the Hawizeh Marshes using motorboats and transport helicopters in an amphibious assault. The Iranians attacked the vital oil-producing Majnoon Island by landing troops via helicopters onto the islands and severing the communication lines between Amareh and Basra. They then continued the attack towards Qurna.
By 29 February, the Iranians had reached the outskirts of Qurna and were closing in on the Baghdad–Basra highway. They had broken out of the marshes and returned to open terrain, where they were confronted by conventional Iraqi weapons, including artillery, tanks, air power, and mustard gas. 1,200 Iranian soldiers were killed in the counter-attack. The Iranians retreated back to the marshes, though they still held onto them along with Majnoon Island.
The Iraqis attacked again on 28 January 1985; they were defeated, and the Iranians retaliated on 11 March 1985 with a major offensive directed against the Baghdad-Basra highway (one of the few major offensives conducted in 1985), codenamed Operation Badr (after the Battle of Badr, Muhammad's first military victory in Mecca).
The ferocity of the Iranian offensive broke through the Iraqi lines. The Revolutionary Guard, with the support of tanks and artillery, broke through north of Qurna on 14 March. That same night 3,000 Iranian troops reached and crossed the Tigris River using pontoon bridges and captured part of the Baghdad–Basra Highway 6, which they had failed to achieve in Operations Dawn 5 and 6.
On 6 January 1986, the Iraqis launched an offensive attempting to retake Majnoon Island. However, they were quickly bogged down into a stalemate against 200,000 Iranian infantrymen, reinforced by amphibious divisions. However, they managed to gain a foothold in the southern part of the island.
On the night of 10–11 February 1986, the Iranians launched Operation Dawn 8, in which 30,000 troops comprising five Army divisions and men from the Revolutionary Guard and Basij advanced in a two-pronged offensive to capture the al-Faw peninsula in southern Iraq, the only area touching the Persian Gulf. The capture of Al Faw and Umm Qasr was a major goal for Iran.
The sudden capture of al-Faw took the Iraqis by shock, since they had thought it impossible for the Iranians to cross the Shatt al-Arab. On 12 February 1986, the Iraqis began a counter-offensive to retake al-Faw, which failed after a week of heavy fighting.
On 24 February 1986, Saddam sent one of his best commanders, General Maher Abd al-Rashid, and the Republican Guard to begin a new offensive to recapture al-Faw. A new round of heavy fighting took place. However, their attempts again ended in failure, costing them many tanks and aircraft: their 15th mechanised division was almost completely wiped out.
In March 1986, the Iranians tried to follow up their success by attempting to take Umm Qasr, which would have completely severed Iraq from the Gulf and placed Iranian troops on the border with Kuwait. However, the offensive failed due to Iranian shortages of armor.
On 25 December 1986, Iran launched Operation Karbala-4 (Karbala referring to Hussein ibn Ali's Battle of Karbala). According to Iraqi General Ra'ad al-Hamdani, this was a diversionary attack. The Iranians launched an amphibious assault against the Iraqi island of Umm al-Rassas in the Shatt-Al-Arab river, parallel to Khoramshahr. They then set up a pontoon bridge and continued the attack, eventually capturing the island in a costly success but failing to advance further; the Iranians had 60,000 casualties, while the Iraqis 9,500.
The Siege of Basra, code-named Operation Karbala-5, was an offensive operation carried out by Iran in an effort to capture the Iraqi port city of Basra in early 1987. This battle, known for its extensive casualties and ferocious conditions, was the biggest battle of the war and proved to be the beginning of the end of the Iran–Iraq War. While Iranian forces crossed the border and captured east part of Basra Governorate, the operation ended in a stalemate.
During Operation Nasr-4, the Iranians surrounded the city of Suleimaniya and with the help of the Peshmerga infiltrated over 140 km into Iraq and raided and threatened to capture the oil-rich city of Kirkuk and other northern oilfields. Nasr-4 was considered to be Iran's most successful individual operation of the war but Iranian forces were unable to consolidate their gains and continue their advance; while these offensives coupled with the Kurdish uprising sapped Iraqi strength, losses in the north would not mean a catastrophic failure for Iraq.
On 17 April 1988, Iraq launched Operation Ramadan Mubarak (Blessed Ramadan), a surprise attack against the 15,000 Basij troops on the peninsula, and within 48 hours, all of the Iranian forces had been killed or cleared from the al-Faw Peninsula.
On 25 May 1988, Iraq launched the first of five Tawakalna ala Allah (Trust in God) Operations, consisting of one of the largest artillery barrages in history, coupled with chemical weapons. The marshes had been dried by drought, allowing the Iraqis to use tanks to bypass Iranian field fortifications, expelling the Iranians from the border town of Shalamcheh after less than 10 hours of combat.
Faced with such losses, Khomeini appointed the cleric Hashemi Rafsanjani as the Supreme Commander of the Armed Forces, though he had in actuality occupied that position for months. Rafsanjani ordered a last desperate counter-attack into Iraq, which was launched 13 June 1988. The Iranians infiltrated through the Iraqi trenches and moved 10 km (6.2 mi) into Iraq and managed to strike Saddam's presidential palace in Baghdad using fighter aircraft. After three days of fighting, the decimated Iranians were driven back to their original positions again.
On 25 June, Iraq launched the second Tawakal ala Allah operation against the Iranians on Majnoon Island. Iraqi commandos used amphibious craft to block the Iranian rear, then used hundreds of tanks with massed conventional and chemical artillery barrages to recapture the island after 8 hours of combat.
Under the threat of a new and even more powerful invasion, Commander-in-Chief Rafsanjani ordered the Iranians to retreat from Haj Omran, Kurdistan on 14 July. The Iranians did not publicly describe this as a retreat, instead calling it a "temporary withdrawal".
Iraq spent the rest of August and early September clearing the Kurdish resistance. Using 60,000 troops along with helicopter gunships, chemical weapons (poison gas), and mass executions, Iraq hit 15 villages, killing rebels and civilians, and forced tens of thousands of Kurds to relocate to settlements. Many Kurdish civilians fled to Iran. By 3 September 1988, the anti-Kurd campaign ended, and all resistance had been crushed.
The Iranians used a combination of semi-guerrilla and infiltration tactics in the Kurdish mountains with the Peshmerga. During Operation Karbala-9 in early April, Iran captured territory near Suleimaniya, provoking a severe poison gas counter-attack, and during Operation Karbala-10, Iran attacked near the same area, capturing more territory.
On 8 March 1980, Iran announced it was withdrawing its ambassador from Iraq, downgraded its diplomatic ties to the charge d'affaires level, and demanded that Iraq do the same. The following day, Iraq declared Iran's ambassador persona non-grata, and demanded his withdrawal from Iraq by 15 March.
On 15 July 1990, Saddam's government laid out its combined objections to the Arab League, including that policy moves were costing Iraq $1 billion a year, that Kuwait was still using the Rumaila oil field, that loans made by the UAE and Kuwait could not be considered debts to its "Arab brothers".