https://apnews.com/bb149842a3d04f29a784824edd15db72

BEIJING (AP) — China on Friday threatened retaliation if U.S. President Donald Trump's planned tariff hikes go ahead, while the renewed acrimony between the two biggest global economies sent stock markets tumbling.

China's government accused Trump of violating his June agreement with President Xi Jinping to revive negotiations aimed at ending a costly fight over Beijing's trade surplus and technology ambitions.