China let its currency fall to its lowest level in more than a decade against the U.S. dollar, with the yuan breaking below 7 per U.S. dollar and triggering the worst sell-off of the year on Wall Street. China insists, however, the move was not in response to the newly announced tariff.
The trade war between China and the U.S. has been going on for more than a year. Investors have been worried about its ramifications in terms of global growth and corporate profits. Some central banks have even started cutting interest rates amid these pressures.