Return Of Yen-Sanity Sparks Chaos

The yen. It's never complicated, but somehow it never ceases to confound. If it seems like only a couple of weeks ago that the currency was languishing at its weakest levels against the dollar in decades, that's because it was. But things took a dramatic turn in recent days amid speculation that the BoJ's cautious exit from the world's grandest experiment in ultra-accommodative monetary policy is proceeding apace (or proceeding at some pace, at least) at a time when the Fed's poised to start cu