8 heads of state under 40: Meet the world's youngest leaders

The world's youngest leaders hail from across the globe — from democracies, monarchies, and dictatorships in Eastern and Western Europe, Asia, and the Middle East.

While seven of the eight leaders are men, the youngest — Vanessa D'Ambrosio, the 28-year-old captain regent of San Marino — is a woman.

Meet the world's eight heads of state under 40: