Black Bloc Vows Violence as Egypt Revolution Sours

May 15 (Bloomberg) -- Political polarization in Egypt has spawned rival fighting factions such as the Black Bloc, a protest group which claims violence is the only option after the nation's peaceful 2011 revolution turned sour. Bloomberg's Salma El Wardany reports from Cairo. (Source: Bloomberg)

Companies' Use of Cash: Buybacks vs. Investment
19:35 - Tobias Levkovich, chief U.S. equity strategist at Citigroup, discusses companies' use of cash, levels of investment, and taking on of debt for acquisitions. He speaks on "Bloomberg Surveillance." (Source: Bloomberg)
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