1940 – Six high-ranking members of Soviet politburo, including Joseph Stalin, sign an order for the execution of 25,700 Polish intelligentsia, including 14,700 Polish POWs, in what will become known as the Katyn massacre.
1940 - 6 anggota tingkat tinggi politbiro Uni Soviet, termasuk Sekretaris Jenderal Joseph Stalin, menandatangani surat perintah pengeksekusian 25.700 intelektual Polandia, termasuk 14.700 tawanan perang, dalam apa yang selanjutnya dikenal sebagai Pembantaian Katyn.