Anupreeta Das joins Paul Vigna, Erik Holm, Stephen Grocer, Maureen Farrell in studio to break down the biggest takeaways from Warren Buffett's annual shareholder letter discussing Berkshire Hathaway's earnings results. Then, after a postponed earnings call and the announced return of chief executive Michael Pearson, can Valeant Pharmaceuticals find its way out of a cloud of uncertainty?

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