China on Wednesday unexpectedly appointed a new trade negotiator key in any talks to resolve the escalating tariff war with the U.S., replacing veteran trade tsar Wang Shouwen with the Chinese envoy to the World Trade Organization.

China replaced its trade representative as Beijing and Washington remain at an impasse over the conditions for talks to cool the escalating trade war.

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.