The effect of US tapering on 'the fragile five' economies
26 September 2013 Last updated at 10:20 BST
When the US Federal Reserve decides to wind down and eventually end its economic stimulus programme it could mean a return to normality for the US economy.
However, it could also have serious ramifications for several large emerging economies.
BBC chief business correspondent Linda Yueh reports on how five countries in particular have been judged as being most at risk.