The Wall Street Journal China Rejects U.S. Ambassador’s Accusation That Beijing Is Undermining Diplomacy — A spokeswoman for China’s Foreign Ministry said that China had acted in a spirit of mutual respect and accused the U.S. of hindering exchanges between people from the two countries. Why Copper Fever Is Breaking — The energy-transition metal is still popular among investors, but bets on a looming supply crunch look less sure than a month ago. The Financial Times Co