Vladimir Putin is a Russian politician and former intelligence officer who has held office since 1999; he is famed for his lengthy presidency.
Justin Trudeau is the 23rd prime minister of Canada and leader of the Liberal Party since 2013. He became famous for his progressive politics.
Nelson Mandela was South Africa's first black president, renowned for his anti-apartheid activism and successful democratic election.
Fidel Castro was the Cuban revolutionary and politician who served as its leader from 1959-2008, becoming a famous icon of communist rule.
Margaret Thatcher was a British politician and Prime Minister (1979-1990) who made history as the first woman leader of a major British political party.