13. Mikhail Gorbachev
Gorbachev was the last ruler of the Soviet Union and was the leader of the Communist Party of the Soviet Union, which dissolved when the Soviet Union did. It was Gorbachev’s policies of reform and openness which led to the end of the Cold War with the US, though it also inadvertently led to the collapse of the Soviet Union. However, the world recognized his attempts to stop the war and hence, awarded him the Nobel Peace Prize in 1990. When some magazines claimed that he had converted to Christianity in 2008, Gorbachev maintained that he was an atheist.