15. 3. 1939 - The Nazi occupation of ČSR, 30. 5. 1945 – 29. 10. 1946 - Expulsion of Germans from Czechoslovakia

Výjimečný stav v Polsku, 26 April 1986 - Chernobyl disaster, 25.3.1988 Candle demonstration in Bratislava, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 31. 12. 1992 Dissolution of Czechoslovakia

1945 - 1947 Expulsion of Germans from former German East territories, Výjimečný stav v Polsku

8. 5. 1945 - End of WWII, 12.1.1945 - 13.2.1945 Vistula–Oder Offensive

1932 - 1933 - Holodomor - Great famine in Ukraine

29. 9. 1938 - The Munich Diktat, 2. 10. 1938 - Poland's annexation of Teschen area, 8. 5. 1945 - End of WWII, 21. 8. 1968 - Invasion of the Warsaw Pact troops, Výjimečný stav v Polsku

1944 - 1949 Greek civil war, 5. 1. - 21. 8. 1968 - The Prague Spring, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

Perestroika, Dissolution of the Soviet Union

2014 - first invasion of Russia into Ukraine, 2022 - full scale invasion of Russia into Ukraine, The Annexation of Crimea (February 2014)