Twitter CEO Costolo on Co-Founder Jack Dorsey

March 25 (Bloomberg) -- Twitter Inc. Chief Executive Officer Dick Costolo talks about his relationship with co-founder Jack Dorsey and the outlook for the Web-based social messaging service. He speaks with Emily Chang on Bloomberg Television's "Surveillance." (Source: Bloomberg)
Cuban Envoy Says Progress Made on Normalizing U.S. Ties
07:28 - Feb. 27 -- Cuban Director of U.S. Policy Josefina Vidal speaks about negotiations on normalizing diplomatic relations between the U.S. and Cuba. She speaks at a news conference in Washington.
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