Explanation:

Muammar Mohammed Abu Minyar al-Gaddafi (/'mo??m??r g?'d??fi/; c. 1942 – 20 October 2011), commonly known as Colonel Gaddafi, was a Libyan revolutionary, politician, and political theorist.
Fidel Alejandro Castro Ruz was a Cuban communist revolutionary and politician who governed the Republic of Cuba as Prime Minister from 1959 to 1976 and then as President from 1976 to 2008.
Pol Pot was a Cambodian politician who led Cambodia as the Prime Minister of Democratic Kampuchea between 1976 and 1979.
Muhammad Hosni El Sayed Mubarak is a former Egyptian military and political leader who served as the fourth president of Egypt from 1981 to 2011. Before he entered politics, Mubarak was a career officer in the Egyptian Air Force.