Every displaced population in modern history has been offered a way out of refugee status. People can become citizens in their new countries. Their children can grow up and live normal lives in the places where they were born. Eventually, the United Nations closes its case files. This is how it works for Afghans, Somalis, Bhutanese, Burmese, and every other group covered by the United Nations High Commissioner for Refugees.
Palestinians are the exception. The reasons for this go back to how their refugee status was first created and who made those decisions.
In November 1947, the United Nations proposed a partition plan for Mandatory Palestine, which was then under British administration. The plan would have created both a Jewish state and an Arab state in the territory. Jewish leadership accepted it. The Arab League rejected it.
On May 14, 1948, Israel declared independence. The following day, five Arab states, Egypt, Jordan, Syria, Iraq, and Lebanon, launched a combined military invasion. The war that followed lasted until early 1949 and ended with armistice agreements, not a peace treaty.
During that war, somewhere between 700,000 and 750,000 Palestinian Arabs left the territory that became Israel. The causes of that departure have been debated by historians for decades, and the full picture remains incomplete for a reason: the archives of every Arab state involved in the 1948 war remain closed. The historical record that exists draws almost entirely from Israeli, British, and Western documentation. What that record shows is a departure that unfolded in stages, not a single expulsion event.
From late 1947 through early 1948, upper and middle class Palestinian families left voluntarily, primarily from port cities and mixed urban areas. They had the means to resettle temporarily in Cairo, Beirut, Amman, or Nablus, and most expected to return once the fighting ended. Political leaders and members of the Arab Higher Committee left during this period as well, a collapse of local leadership that accelerated the panic that followed. The events at Deir Yassin in April 1948 were amplified extensively by Arab media and triggered flight from surrounding areas as populations feared wider violence. After Israel declared independence and five Arab armies invaded, the full-scale war drove displacement across larger areas of the country.
What documents show about Arab leadership during this period cuts against the narrative that has calcified around 1948. There was no coordinated, region-wide Arab broadcast ordering Palestinian civilians to leave. What did exist was the opposite. On April 4, 1948, Damascus Radio urged Palestinian government employees to stay at their jobs. On May 10, Radio Jerusalem broadcast direct orders from Arab commanders and the Arab Higher Committee to halt the mass flight from Jerusalem and surrounding areas. Fawzi al-Qawuqji, commander of the Arab Liberation Army, was given explicit instructions to stop the flight by force and to requisition transport for that purpose. Azzam Pasha, secretary-general of the Arab League, and King Abdullah of Jordan both issued public appeals to Arabs not to leave their homes. As early as March 8, 1948, the Arab Higher Command circulated a memo to Arab governments instructing them not to grant entry permits to Palestinians. Lebanon and Syria went further, formally denying residency permits to Palestinian men of military age in late April and early May.
The logic behind all of it was stated by Azzam Pasha, Egyptian diplomat and pan-Arab nationalist serving as Secretary-General of the Arab League. He said the absence of women and children from Palestine would free the men for fighting. Arab leaders weren’t trying to keep Palestinians in place out of concern for their welfare. They were trying to keep a fighting population on the battlefield. The Palestinian civilian population was viewed by its own would-be protectors as military and political assets. When the war didn’t go their way, and the flight became a flood anyway, the same governments that had tried to keep Palestinians in Palestine as soldiers refused to absorb them as refugees. They were useful in one context and disposable in the other, and the camps were the result.
What is equally documented and less discussed is what happened at the Lausanne peace conference in 1949. Israel offered to allow the return of 100,000 refugees as part of a broader peace settlement. The Arab states rejected it. That rejection, not the departure itself, is the moment the refugee problem was cemented as permanent. The Arab governments that had launched the invasion, watched their populations flee its consequences, and then declined the only concrete repatriation offer on the table, went on to keep those populations in camps for the next 75 years. The episode was later named the Nakba, the Arabic word for catastrophe. The term itself was not in wide political circulation until decades after 1948, when it was systematically deployed to frame the consequences of a war the Arab states had chosen to start and lost.
Between 850,000 and one million Jews were expelled or fled from Iraq, Egypt, Libya, Syria, Yemen, and elsewhere in the years surrounding 1948. These weren’t communities that had arrived recently. Jews had lived in Iraq for over 2,500 years. They had been in Egypt, Libya, and Yemen for centuries. In Iraq, laws passed in 1950 and 1951 stripped Jews of their citizenship and seized their property. Those who wanted to leave could do so only by renouncing everything they owned. In Libya, anti-Jewish pogroms began as early as 1945, three years before Israel existed, killing over 130 Jews and destroying Jewish neighborhoods in Tripoli. In Egypt, Jews were expelled outright. In Yemen, Jews were barred from leaving the country in 1949, then permitted to go only under conditions of state-organized removal. Syria froze Jewish assets, banned emigration, and made contact with people abroad a criminal offense. Communities that had existed for over a thousand years were dismantled within a generation through a combination of state-sanctioned violence, legal persecution, asset confiscation, and forced removal.
Those people, and their descendants, were absorbed primarily by Israel, a country that had just declared independence while simultaneously fighting a war for its survival against five invading armies. They arrived with nothing. No international agency was created to process their claims. No hereditary refugee status was assigned to their children or grandchildren. No annual UN resolutions were passed in their name. No camps were built and maintained by Western donor funding. Their displacement is documented in historical records but occupies almost no space in the international institutional framework that emerged from 1948.
What the Arab states did to their Jewish populations in the years after 1948 constitutes one of the most complete ethnic cleansing of the twentieth century. It happened at the same time, in response to the same conflict, and produced a population of comparable size to the Palestinian exodus. The institutional response to one was UNRWA, 75 years of infrastructure, funding, hereditary status, and a registered population that has grown eightfold. The institutional response to the other was silence.
That asymmetry, two populations displaced by the same regional conflict, two entirely different institutional responses, is the foundation on which UNRWA was built.
The United Nations Relief and Works Agency for Palestine Refugees in the Near East, known as UNRWA, was established by UN General Assembly Resolution 302(IV) in December 1949. Its original purpose was emergency relief for people displaced by the 1948 war. One year later, in December 1950, the UN created UNHCR to address the global refugee population.
This separation matters because the two agencies use different definitions of what constitutes a refugee.
UNHCR uses the definition from the 1951 Refugee Convention. Under that framework, a refugee is a specific living person with a well-founded fear of persecution who is outside their home country. Article I(c)(3) of the Convention is explicit: you are no longer a refugee once you become a citizen of another country and are protected there. The definition applies to people, not bloodlines. It has a beginning and an end.
UNRWA’s definition works differently. In 1965, UNRWA expanded eligibility to include the grandchildren of the original 1948 refugees. In 1982, it expanded again to include all descendants through the male line, including legally adopted children, regardless of whether they held citizenship somewhere else. A person can hold full Jordanian citizenship, live in Amman, raise a family there, and still be classified as a Palestinian refugee under UNRWA’s rules.
There is no international treaty that requires this. UNRWA’s definition is not anchored in the 1951 Refugee Convention or any other binding legal instrument. It was created by the agency and expanded by the agency. The result is a classification system that cannot shrink.
The approximately 700,000 to 750,000 Palestinians who left during the 1948 war became the original registered population. By 2026, UNRWA had active files on nearly 5.9 million registered Palestinian refugees. That growth isn’t driven by new wars or mass displacement events. It’s the arithmetic of hereditary status applied across four generations.
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