China's leader Xi Jinping made headlines in South Korea over the weekend as he joked that a pair of smartphones he gifted to the country's president could be used for espionage.
It's an open secret that countries spy on each other. That's probably why world leaders almost never talk about espionage in public. But over the weekend, it was the punchline of a joke between China's top leader, Xi Jinping, and President Lee Jae Myung of South Korea.