21. 8. 1968 - Invasion of the Warsaw Pact troops

Cuba after 1959

9.11.1989 - The fall of the Berlin Wall, 1989 - The fall of the iron curtain, 5. 1. - 21. 8. 1968 - The Prague Spring, 31. 12. 1992 Dissolution of Czechoslovakia, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia and 2 more anniversaries

Black Spring of Cuba 2003, Cuba after 1959

17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

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

21. 8. 1968 - Invasion of the Warsaw Pact troops, 1. 1. 1977 - Declaration of Chart 77, Palach Week, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia

13 de Marzo Tugboat Sinking, Cuba after 1959, Triumph of the Revolution (Cuba)