Japanese Finance Minister Shunichi Suzuki declined to comment Wednesday on developments in the currency market after the yen rose sharply against the U.S. dollar overnight to its highest level since early May. The yen has regained some of its lost ground amid a market consensus that the interest rate differential between Japan and the United States will narrow, fueled by expectations among some traders that the Bank of Japan will raise interest rates further next week. “If I make comments as finance minister on currency levels and developments, they may unexpectedly affect the foreign exchange…