Sino-Soviet Treaty of Friendship signed

Twelve Western states signed the treaty establishing NATO. Soviet officials portrayed it as a hostile bloc, and the alliance further institutionalized the division of Europe that had emerged from...

The blockade ended after almost a year, following the Western airlift and negotiations. The crisis deepened Germany’s division and demonstrated how decisions by occupying powers shaped daily life...

The USSR detonated its first atomic device at the Semipalatinsk test site in Kazakhstan. The test began decades of nuclear testing that exposed nearby Kazakh communities to radiation and environmental...

Mao Zedong announced the founding of the People’s Republic of China after the communist victory in the civil war. The event reshaped Soviet diplomacy and Asian geopolitics, while Chinese...

The GDR was established in the Soviet occupation zone after the creation of the Federal Republic of Germany. The new state formalized Germany’s division, while its sovereignty remained constrained...

North Korean forces crossed the 38th parallel and attacked South Korea. The war grew from Korea’s division after Japanese colonial rule and involved Soviet support for the North, U.S.-led UN forces,...

The Soviet Union ended its boycott of the Security Council over the refusal to seat the People’s Republic of China. The boycott had allowed the Council to authorize action in Korea; the return...

Chinese forces crossed into Korea as United Nations and South Korean troops advanced north. Soviet military aid and Chinese intervention transformed the conflict into a regional war, while Korean...

The official plan period closed after rebuilding key industrial output, but living standards and housing remained strained. The burden of reconstruction fell unevenly across republics and social...

Soviet authorities deported Jehovah’s Witnesses from several republics, including the Baltic states, western Ukraine, and Moldavia, to Siberia. The state treated a transnational religious community as...