http://www.historynet.com/the-spy-who-saved-the-soviets.htm A neat article on one of the most important spies during the Second World War. He was considered Stalins most important spies during the war. Getting a lot of information from a German colonel named Eugene Ott, he managed to obtain information regarding the German invasion of the Soviet Union and gain an accurate date of the invasion. And yet despite the convincing evidence that Soviet intelligence had collected that strengthened Sorge's warning, Stalin dismissed the information as coming from "a **** who has set himself up with some little factories and brothels in Japan." But when the invasion actually happened, the soviets began listening more to his information. Unfortunately he was arrested by the Japanese in October 1941, and was imprisoned for three years. The soviets refused to take him back when the Japanese offered a prisoner swap for some of their own soldiers who were POWs in the Soviet Union. On November 7, 1944 he was hanged in Sugamo Prison.