Introduction: When DNA Reads the Pages of History History is no longer the exclusive preserve of texts and archaeology. Over the past two decades, archaeogenetics has become an independent source of historical inference capable of testing hypotheses about migration, population replacement, and continuity that have long preoccupied historians of the Near East. Iraq, as the heartland of \Mesopotamia—where the first urban states in history took shape—is an exceptional laboratory for this intersection: on the one hand, cuneiform texts provide names of peoples and languages (Sumerians, Akkadians, Amorites, Hurrians…); on the other, ancient DNA (aDNA) is now able to trace the biological fates of these groups, not merely their names. There is, however, a fundamental methodological caveat that must be flagged from the outset: genomics does not write history in place of texts; it reads history from another angle. It does not tell us which people’s language the inhabitants of a given site spoke, nor the name they gave themselves; it tells us about kinship, ancestry, and population admixture over time. Hence the most precise contribution of genomics is the testing of major hypotheses: Was the cultural transition (for example, from the Bronze Age to the Iron Age) accompanied by population replacement, or by absorption and integration? Were the historical groups we call “peoples” isolated entities, or overlapping networks of genetic flows? First: Iraq—A Melting Pot, Not a “Pure Origin” A recent study (2026) analyzing ancient DNA from seventeen individuals at the site of Bakr Awa in northeastern Iraq, spanning the Bronze Age to the Iron Age, showed that the Bronze Age genetic makeup was highly heterogeneous, combining Anatolian, Levantine, and Caucasus/Yamnaya-related influences on a local Pre-Pottery Neolithic background. This corresponds closely to what archaeological texts reveal about the site’s diverse ethno-linguistic presence (Akkadian and Hurrian). More important is the conclusion regarding the Iron Age: after the Late Bronze Age collapse and the abandonment of the site, the Iron Age witnessed no population replacement, but rather admixture of the diverse genetic lineages that had existed before it. The study comments that this demonstrates that “cultural changes need not necessarily entail large-scale genetic changes,” and describes Mesopotamia as a “melting pot” for ancient ethno-linguistic groups. This conclusion echoes an earlier study of the Marsh Arabs of southern Iraq (2011), a community traditionally assumed to be the closest to the Sumerians. Analysis of the Y-chromosome and mitochondrial DNA showed that the main component of this community is autochthonous Eastern Mediterranean, with weak contributions from Southwest Asia and Africa. The researchers argued that haplogroup J1-P58 showed “a local expansion almost contemporary with the period of the Sumerian city-states” in southern Mesopotamia. Thus, the hypothesis of an Indian or South Asian origin for the Sumerians finds no genetic support; rather, the data point to a local Eastern Mediterranean origin. This does not mean “proving” Sumerian identity on the basis of the Marsh Arabs; it means that genetic continuity in southern Iraq is older and deeper than any later newcomer, and that major civilizational transformations (Sumerian, Akkadian, Babylonian) took place over a local population fabric that was not replaced. Second: Arabia and the Levant—Genomics and the Semitic Languages At the level of the broader Arab region, a major study on “The Genomic History of the Middle East” (2020–2021) revealed that most Middle Eastern populations today can be modeled as an admixture of four ancient groups: Neolithic Levantines, Neolithic Iranians, eastern hunter-gatherers, and an East African group about 4,500 years old. A striking paradox emerges here: Arabs (the inhabitants of Arabia) carry the highest levels of Basal Eurasian ancestry among world populations today, an ancestry that “dilutes” Neanderthal ancestry, which explains its lower proportion among them compared with other non-Africans. The study also detected a population bottleneck among Arabian populations coinciding with the desertification of Arabia about 6,000 years ago, and another bottleneck among Levantine populations coinciding with the famous drought event about 4,200 years ago (the 4.2 ka event), which has been linked to the collapse of the Akkadian Empire. More importantly, the researchers found an association between population movements and admixture in the region and the spread of the Semitic languages. Their analysis suggests that a population group (perhaps not yet modeled from the Levant or Mesopotamia) carried this ancestry and spread with it, and may have played a role in the spread of early Semitic during the Early Bronze Age. This does not mean that a “Semitic gene” exists; it means that the spread of the Semitic language family was accompanied by human movement and population admixture, not merely by the oral transmission of language. Another study on Arabia (2021) confirms this picture: it shows “continuity” linking western Arabia to the Levant and eastern Arabia to Iran and the Caucasus, with the east–west axis being the strongest determinant of population structure in Arabia. In the Levant, an ancient DNA study from Sidon (Bronze Age) demonstrated genetic continuity since the Bronze Age in modern Lebanon, with admixture between Neolithic Levantines and Chalcolithic Iranians occurring about 5,000 years ago—a timing that intersects with the rise and fall of the Akkadian Empire. The study notes that haplogroup J-P58, common in Arabia, reaches 74.1% among the Marsh Arabs of Iraq, and is considered one of the most prominent paternal lineages in southwestern Mesopotamia. Third: What Genomics Adds to Historical Writing The methodological contributions of genomics to Arab and Iraqi history can be summarized in three points: 1-Dismantling the myth of “racial purity.” None of the reviewed studies shows the existence of a “Sumerian genome” or a “pure Arab genome.” All of them show that populations are the product of successive gene flows, and that what we call a historical “people” is often a political, linguistic, or cultural label that does not correspond to a closed biological unit. The Bakr Awa study is the best evidence: a single site knew an Akkadian and Hurrian presence, and then the diverse Bronze Age lineages merged there in the Iron Age without replacement. 2- Linking climate change to population change. Genomics provides a tool for dating population bottlenecks and linking them to archaeologically documented climatic events, as in the case of the 4.2 ka drought and the Akkadian collapse, or the desertification of Arabia 6,000 years ago. This opens a door to understanding the environmental vulnerability that governed the region’s history, away from explanations based solely on invasions and tribal migrations. 3-Testing “continuity” rather than “replacement.” The common public assumption is that every new arrival (Akkadians, Amorites, Arameans, Arabs) “replaced” those before them. Genomics, however, reveals a more complex pattern: admixture, absorption, and long-term continuity, alongside shifts in language and political identity. This requires rewriting history as a history of interaction, not a history of replacement. Conclusion: Toward a Multi-Source History The relationship between genomics and history in Iraq and the Arab region is not one of competition but of complementarity. Cuneiform texts tell us the names of gods, kings, and languages; archaeology tells us about cities, palaces, and irrigation canals; genomics tells us who inhabited these cities, who mixed with whom, who stayed and who left. Perhaps the greatest lesson of genomics for the Arab historian is methodological humility: the collective identities we treat as fixed entities are in fact open historical processes, and the blood flowing in the veins of the people of Iraq, the Levant, and Arabia carries a memory of admixture and continuity far longer than any narrow nationalist narrative. Documentary note: This article draws on peer-reviewed studies published in journals such as Genome Biology, Cell, Genome Biology and Evolution, and The American Journal of Human Genetics, with reference to their online publication sites. It should be emphasized that genetic inference in ancient history is limited by sample size and by the conditions of DNA preservation in hot climates, which requires reading the results with caution and not burdening them with identity-related or political implications they cannot bear. By the Head of the Department, Prof. Dr. Younis Abdul Ridha Al-Khafaji AL_mustaqbal University is the first university in Iraq