Question

two leaders in history: one tyrant and one good leader. You should pick individuals who have ruled within the past 50 years?

Answer 1

ummm.. Pol-Pot, who was a cambodian dictator, ruled his country between 1975 - 1979 with a strict communist regime, and did what is commonly called the first and, as yet, the only autohumano massacre in hisory - essentially, he butchered his own nation, his own people.
for a good leader, id choose Jimmy Carter, who, for instance, negotiated the peace agreements between Israel and egypt - the first peace agreements Israel signed with a hostile arabic country.