The Japanese yen has fallen below 143 against the U.S. dollar, with a day low of 141.76. This decline is attributed to the Bank of Japan's recent interest rate hike, which has impacted the yen carry trade and led to a brief 'flash crash' in stock markets in early August. The U.S. dollar is poised to break 142 yen, hitting its lowest level of the year, raising concerns about the carry trade and implied accelerated rate cuts. Central bankers are expected to work through the weekend to address these issues, following the Sun. night selloff.