A heightened US-China financial war imperils global economy

Lashing back against Trump's latest tariff threat, China lets yuan drop to 11-year low, suspends farm purchases.;

FILE - In this June 10, 2019, file photo, a man walks past a money exchange shop decorated with different banknotes at Central, a business district of Hong Kong. The U.S. Treasury Department labeled China a currency manipulator Monday, Aug. 5, after Beijing pushed down the value of its yuan in a dramatic escalation of the trade conflict between the world’s two biggest economies. (AP Photo/Kin Cheung, File)

WASHINGTON — Just what the fragile global economy didn’t need: An unpredictable escalation in President Donald Trump’s trade war with China, one that spreads the conflict to currency markets, threatens to involve other countries and raises the risk of a global recession.