Its sovereign bonds don’t yield much more than US Treasuries, they cost less to insure than Spanish notes and its currency is more stable than China’s managed yuan.In a sign of how the flood of money into emerging markets is upending conventional wisdom, military-run Thailand with a credit rating just three levels above junk at Moody’s Investors Service has become a favoured low-yielding destination for bond investors.A current-account surplus that’s forecast to be around 10 percent of gross