Leonid Borisovich Krasin was a Russian Soviet politician, engineer, social entrepreneur, Bolshevik revolutionary and a Soviet diplomat. In 1924 he became the first Soviet ambassador to France. A year later, he left Paris to become ambassador to London, where he remained until his death. He was an early and close associate of Vladimir Lenin and his financier and the first finance wizard of the Communist Party. Krasin died suddenly in London after having contracted pernicious anemia.