San Remo Conference
The 1920 Italian seaside meeting where Britain and France turned the pencil lines of Sykes-Picot into legally binding mandates over the Arab world.
Sykes-Picot is the agreement everyone names, but it was a secret wartime bargain with no legal force, repudiated by the Bolsheviks who published it and overtaken by four years of events. The document that actually created the modern Middle Eastern state system was signed at a resort on the Italian Riviera in April 1920. In one week at San Remo, the victors assigned the Ottoman Arab provinces as League of Nations mandates, wrote the Balfour Declaration into international law, and divided the oil.
What was decided
The Supreme Council of the Allied powers, chiefly Britain, France, and Italy, with Japan present and the United States attending as an observer, settled the following in eight days.
France received the mandate for Syria and Lebanon. Britain received the mandates for Mesopotamia, which became Iraq, and for Palestine, which then included the territory east of the Jordan that became Transjordan. The mandate system, invented at Paris the previous year, was formally a trust: the mandatory power would administer a territory whose people were held to be not yet able to stand by themselves, until they could. In practice it was colonial rule with an expiry date nobody specified.
The Palestine mandate incorporated the text of the Balfour Declaration, committing the mandatory power to facilitating a national home for the Jewish people while safeguarding the civil and religious rights of the existing non-Jewish communities. That transition from a British foreign secretary's letter of 1917 to a binding international instrument in 1920 is the legal step that mattered, and it is why San Remo is cited to this day in arguments about the legitimacy of Israel's founding.
A separate San Remo oil agreement gave France a share of the Mosul oil concession that Britain had taken over from German interests, in return for French acceptance of British control of Mosul itself. Iraq's northern border was drawn where it was drawn substantially because of what was under it.
The promises it broke
San Remo landed on an Arab world that had been promised something different, twice.
The Hussein-McMahon correspondence of 1915 and 1916 had encouraged the Sharif of Mecca to revolt against the Ottomans with British assurances of Arab independence across most of the region, and the Arab Revolt had been fought on that basis. President Wilson's principle of self-determination had been proclaimed as a founding value of the postwar order. And in March 1920, a month before San Remo, the Syrian National Congress in Damascus had declared an independent kingdom of Syria under Faisal, the son of the Sharif who had led the revolt.
San Remo simply overrode all of it. In July 1920 French troops marched on Damascus, defeated Faisal's small force at Maysalun, and expelled him. Britain, embarrassed, later installed him as king of Iraq instead, and made his brother Abdullah emir of Transjordan.
The reaction was immediate. Iraq rose in a general revolt in the summer of 1920 that took months and heavy British casualties to suppress, and which pushed London toward indirect rule through a client monarchy because direct administration was unaffordable. Palestinian Arabs, who had understood the Balfour Declaration as a British statement of intent, now faced it as an obligation their governing power was legally bound to fulfill.
Why it is the right date to remember
The reason to know San Remo rather than only Sykes-Picot is precision. Sykes-Picot shows you what two officials imagined in 1916. San Remo shows you what was actually imposed in 1920, by whom, with what legal machinery, and against what alternatives that were live at the time.
Every border, mandate, and monarchy that followed traces to that week: the Iraqi state assembled from three Ottoman provinces, the separation of Lebanon from Syria, the invention of Transjordan, and the Palestine mandate with its two irreconcilable commitments written into the same paragraph. The League gave its formal approval afterward. Nobody at the conference asked anyone who lived there.