Nikolai Ivanovich Kibalchich (Russian: Николай Иванович Кибальчич, Ukrainian: Микола Іванович Кибальчич,Serbian: Никола Кибалчић, Mykola Ivanovych Kybalchych; 19 October 1853 – April 3, 1881) was a Ukrainian revolutionary of Ukrainian-Serbian origin in Russian empire, who took part in the assassination of Tsar Alexander II as the main explosive expert for Narodnaya Volya (the People´s Will), and was also a rocket pioneer. He was a distant cousin of revolutionary Victor Serge.
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