📅 25 August 1941
Britain and the Soviet Union invaded Iran despite its declared neutrality. Iran protested the intervention; Soviet authorities invoked security concerns and the 1921 treaty. The invasion placed...
📅 16 September 1941
Reza Shah abdicated during British-Soviet occupation and his son succeeded him. The change reopened political activity while Iran remained subject to foreign military power.
📅 28 May 1933
After the government canceled the D’Arcy concession in 1932, negotiations produced a new agreement with the Anglo-Persian Oil Company. The Majlis ratified it May 28; royal assent followed May 29. It...
📅 21 March 1935
A foreign ministry circular took effect on Nowruz, asking governments to use “Iran” and “Iranian” in official correspondence instead of the Western exonym “Persia.” Iran was already used domestically;...
📅 25 August 1941
British and Soviet troops entered from south and north, citing security concerns and German nationals. The operation also secured an Allied supply corridor to the USSR and protected strategic...
📅 16 September 1941
Three weeks after the invasion, Reza Shah abdicated and his son Mohammad Reza Pahlavi succeeded him. Allied pressure and the collapse of Iranian military resistance shaped the succession. Reza Shah...
