June 27, 1954 The first atomic power station opens near Moscow at Obninsk, Russia.

June 28, 1914 Austrian Archduke Franz Ferdinand and his wife, Sofia, are assassinated in Sarajevo, Bosnia, by a Serb nationalist, Gavrilo Princip. Princip is arrested, but political tensions are so high between Austria-Hungary and Serbia that war breaks out as a result. Like falling dominoes, international alliances bring one country after another into the confl