Unintended audio recordings at the G7 summit captured world leaders casually discussing sports, smoking habits, and weather instead of just global policy.

The leaders of the world’s richest democracies are talking about how to tackle some of the world’s biggest problems this week, but hot mics at the G7 summit revealed that conversations also covered lighter fare. Sports. Cigarettes. The weather. And something about Greenland? As world leaders made their way into conference rooms at a lakeside resort, microphones set up for their weighty discussions about war and trade often caught off-the-cuff banter. Meloni quit smoking Italian Prime Minister...