12. Pol Pot

Pol Pot was the leader of Cambodia in 1975 who brought his country into great conflicts when he attempted to provide equality to everyone. His plan was met with massive protests and resistance. As punishment, he deprived his people of their right to proper nutrition, education, and medical help. He even went as far as executing some 2.5 million who were opposed to his plans. He died in 1988, possibly of a heart attack while waiting to be turned over to an international tribunal to be tried for his war crimes.

13. Yahya Khan

General Agha Mohammad Yahya Khan was president of Pakistan in 1966 to 1971. He served during World War II. His presidency was marred by armed conflicts and genocide. His campaign against Eastern Pakistan claimed the lives of about 3 million, according to some sources. He died in 1980 due to over-indulgence from alcohol.