26 April 1986 - Chernobyl disaster

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

26 April 1986 - Chernobyl disaster, 17. 11. - 29. 12. 1989 - The Velvet Revolution in Czechoslovakia, 29. 6. 1989 – Zveřejnění manifestu Několik vět

2014 - first invasion of Russia into Ukraine, 2022 - full scale invasion of Russia into Ukraine, 26 April 1986 - Chernobyl disaster, Perestroika, The Annexation of Crimea (February 2014) and 1 more anniversaries

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Perestroika, 26 April 1986 - Chernobyl disaster, The Orange Revolution of 2004, The Revolution of Dignity (21.11. 2013 – 22.02. 2014), 2014 - first invasion of Russia into Ukraine and 1 more anniversaries

26 April 1986 - Chernobyl disaster, Perestroika, The Orange Revolution of 2004, The Revolution of Dignity (21.11. 2013 – 22.02. 2014), 2022 - full scale invasion of Russia into Ukraine

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Ukraine in 1990-s., Ukrainian student discontent (1980 - 1990), Perestroika, 26 April 1986 - Chernobyl disaster, The Orange Revolution of 2004 and 1 more anniversaries

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