China overnight retaliated against U.S. moves by announcing $50B of its own tariffs.
"We certainly don't want to have any trade war with anybody, but people have to understand who started all this." says China's U.S. ambassador.
Europe's lower by 1.2%, and U.S. stock index futures are down about 1.75% across the board.
The 10-year Treasury yield is off 2.5 basis points to 2.755%.
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