The historically weak yen appears to be turning a corner amid speculation that the Bank of Japan's ultraloose monetary policy is ending, though structural weaknesses in the Japanese economy raise questions over the currency's ability to endure higher rates. The yen climbed to the 141 range against the dollar in New York on Thursday, before ending the session at around 144. Thursday's gain was spurred by BOJ Gov. Kazuo Ueda's telling parliament that day that handling policy will be "more challenging" in the weeks ahead and into next year. The yen weakened slightly to the 145 range on Friday in response to ... (full story)