Bonds issued in emerging market currencies have been red-hot favourites with investors this year, garnering returns of 8.3 percent so far in 2012. But for some the happy days are drawing to a close — U.S. Treasury yields are nudging higher as the U.S. recovery gains a foothold and the Fed holds back from more money printing for now at least. That could spell trouble for emerging markets across the board (here’s something I wrote on this subject recently) but, according to JP Morgan, it is Asian bond markets that may bear the brunt.