China on Wednesday removed Vice Commerce Minister Wang Shouwen from his role as trade negotiator and replaced him with a former Chinese representative to the World Trade Organization, amid an escalating tariff war with the United States.

Shares of Boeing fell Tuesday following a report that China has halted the delivery of all its jets to airlines in the country as part of the escalating trade war.

China reportedly asked its airlines to halt Boeing orders, which has put the aircraft manufacturer in the middle of the U.S.’s trade war with China. Boeing, a major U.S. company, relies heavily on international orders,