Jack Lew, Former U.S. Treasury Secretary, thinks economic sanctions are a powerful tool to influence countries to change their policies. Gideon Rose, Foreign Affairs Magazine Editor, says the U.S. is abusing its privileges. Alison Williams, Bloomberg Intelligence Senior Analyst of U.S. Banks, talks IPO growth. Mohamed El-Erian, Bloomberg Opinion Columnist, is worried about the over-promise of liquidity in banks. 

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