The Tsar Bomba, the most powerful explosive weapon ever created, was detonated by the USSR.
27th May 1703: The foundation of St Petersburg by Tsar Peter the Great
27th May 2017
11th November 1918: WW1 Armistice of Compiègne is signed
11th November 2018
9th November 1989: East Germany opens the Berlin Wall
9th November 2017