English Abstract: Woori Bank of Korea invested about $1.5 billion in 2005 and 2006 in collateralized debt securities ….S. In the aftermath of the financial crisis in 2007-2008, Woori Bank wrote off most of the investment and brought actions in … the U.S. federal court against Citigroup, Merrill Lynch, Royal Bank of Scotland, and others. Unfortunately for Woori Bank …