For centuries, the bones of some six million people were buried in the catacombs beneath the city. Curators are trying to preserve and modernize the tunnels while maintaining the spooky ambience.
Long concerned about geopolitical crises, China redoubled efforts to secure energy security when President Trump started raising the stakes in his first term.
The Chinese government tightened rules to curb what it described as illegal drone use, but some users say the changes are now restricting too many flights.
The U.S. military’s search-and-rescue operation for a missing American airman entered its second day. The Israeli military struck a major petrochemical complex in Iran.