Dmitri Lovetsky/Pool via Reuters
Russian President Vladimir Putin and Chinese President Xi Jinping at the St. Petersburg International Economic Forum, where Putin presented Xi with a degree from St. Petersburg State University, on June 6, 2019.
- Xi Jinping has been president of China since 2013, while Putin has led Russia since 1999.
- The two leaders have formed a close friendship over the years, with Xi recently describing Putin as his "best and bosom friend."
- They have celebrated birthdays, exchanged gifts, and attended sports games in the past.
- Learn more about their bromance through the photos below.
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You may have heard of President Donald Trump's budding bromance with French President Emmanuel Macron or even North Korean leader Kim Jong Un, who has written the US president multiple letters and with whom Trump said he had a "great friendship."
But the most unwavering, longstanding relationship between world leaders may be that China's Xi Jinping and Russia's Vladimir Putin.
The leaders have known each other since at least 2013, when Xi became China's president and Putin was already the leader of Russia.
Their countries share a long border, located in northwestern China and southeastern Russia, and meet often at international summits.
Learn more about their friendship through some of their best photos below.