Top U.S. and Chinese officials were meeting in London on Monday to try to defuse a trade dispute that has widened from tariffs to restrictions over rare earths, threatening a global supply chain shock and slower economic growth.

A Chinese delegation led by Vice Premier He Lifeng held talks with U.S. Commerce Secretary Howard Lutnick, Treasury Secretary Scott Bessent and Trade Representative Jamieson Greer at Lancaster House, an ornate 200-year-old mansion near Buckingham Palace.