Sometimes it's hard to picture what politicians and dictators were like before they left their marks on the global stage.
We collected old photos of major leaders, past and current, to give a taste of who they once were.
Unfortunately, we were limited by photo availability, so not every major figure from the 20th and 21st centuries made it into the post.
Check out the throwbacks below:
22 leaders and dictators when they were young
Iranian President Hassan Rouhani in a military service uniform in an undated photograph.
Russian President Vladimir Putin as a young child in Russia in the 1950s.
Photo Credit: Wikimedia, The Kremlin
An undated photo of Saudi Arabia's King Salman. He was first made deputy governor of Riyadh in 1954, at about age 19.
German Chancellor Angela Merkel with fellow Christian Democrat Lothar de Maiziere in 1990.
A young Justin Trudeaus (R) is seen with his brother while in Massachusettes.
(Photo by Boris Spremo/Toronto Star via Getty Images)
Joseph Stalin, who later became the leader of the USSR, in 1902, a few years after he was expelled from seminary school.
Former Italian Prime Minister Matteo Renzi once appeared on Italy's Ruota della Fortuna (Wheel of Fortune) in the early 1990s at age 19. He won the equivalent of tens of thousands of euros.
Japanese Prime Minister Shinzo Abe as a child, left, with his family in 1956. His father, Shintaro Abe, was foreign minister between 1982 and 1986.
Aung San Suu Kyi, state counsellor of Myanmar, as a 6-year-old in 1951. She was awarded the Nobel Peace Prize in 1991 but has since been criticized by rights groups over her failure to speak up for minority groups.
Photo Credit: Wikimedia via Freedom from Fear
Adolf Hitler as a baby.
Photo Credit: Bundesarchiv
Crown Princess Elizabeth of Great Britain, later Queen Elizabeth II, with her pony, at age 10.
Photo Credit : Getty
A young Bill Clinton sits astride a pony near his childhood home of Hope, Arkansas, in this undated photo.
British Foreign Minister Boris Johnson, then president of the Oxford Union, speaks with Melina Mercouri, Greek minister for culture, in 1986.
REUTERS/Brian Smith PN
Brazil's Dilma Rousseff, center, in an undated photo with her family. The Senate of Brazil suspended her powers and duties for up to six months in May 2016.
Wikimedia via Biografia
Former US President Barack Obama with his grandparents, Stanley Armour Dunham and Madelyn Dunham, in New York in the 1980s.
Photo Credit: Obama for America
Franklin D. Roosevelt dressed in a sailor 's costume and sitting on a carved wooden chair at the age of eight.
(Photo by Culture Club/Getty Images)
Former US President George W. Bush served in the Texas Air National Guard from 1968 to 1973.
Photo Credit: Wikimedia
Nicolae Ceausescu, the former head of Romania's Communist Party, as a 16-year-old, in 1934.
Mahatma Gandhi, right, with his brother Laxmidas in 1886.
(Photo by Underwood Archives/Getty Images)
Kim Jong Un, pictured here with his mother.
Photo Credit: DPRK propaganda via www.atimes.com