Japan’s yen has fallen to ¥163 against the U.S. dollar, its weakest level since the mid-1980s, Mohamed A. El-Erian said. The move underscores persistent currenc

Japan’s yen has fallen to ¥163 against the U.S. dollar, its weakest level since the mid-1980s, Mohamed A. El-Erian said. The move underscores persistent currency-market pressure and raises the stakes for Japan’s economy and global investors.