In world politics, youth appears to be having a moment.
The past week has seen two people in their 30s — Austria's Sebastian Kurz, 31; and New Zealand's Jacinda Ardern, 37 — come out on top in their countries' national elections, and are set to take high office.
Earlier in 2017, political events in France and Ireland also produced leaders in their 30s.
It is a stark contrast to just a year before, when UK Prime Minister David Cameron (then 49) was succeeded by 59-year-old Theresa May, and 55-year-old US president Barack Obama handed over to Donald Trump, 70.
Scroll down to see the young people who have ascended to the heights of political power.
10. FRANCE: Emmanuel Macron, 39 (born 21 December 1977)
Macron won a resounding victory in the 2017 French presidential election, beating Marine Le Pen by a margin of almost two votes to one.
Once a minister in the administration of previous president François Hollande, Macron broke away from the establishment Socialist party to form his own political movement and take a tilt at the presidency.
En Marche!, his political movement, has since secured a sizable majority in the French National Assembly, though Macron's own popularity has started to dip precipitously.
9. SAN MARINO: Matteo Fiorini, 39 (born 10 February 1978)
Fiorini is a Captain Regent of San Marino.
San Marino is a tiny principality of 33,000 people, entirely surrounded by Italy.
It has two formal heads of state, known as Captains Regent, who hold equal power. Fiorini's co-captain is also on this list.
They are chosen from San Marino's elected legislative body, the 60-person Great and General council, which picks two of its own number to serve six-month terms.
The pair's term runs out in April 2018.
8. ESTONIA: Jüri Ratas, 39 (born 2 July 1978)
Ratas became Estonia's leader in November after the country's previous political settlement collapsed.
As leader of the Centre Party he negotiated a new coalition in the country with himself at the helm.
He previously served as mayor of Tallinn, Estonia's capital, from 2005 to 2007, and was later elected as a member of the Riigikogu, the national legislature.
He took over as leader of his party in November 2016 and became Prime Minister less than a month later.
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