Warren Buffett touts his iconic Coca-Cola and American Express bets in his annual letter - and trashes managers who manipulate earnings

• Warren Buffett published his famous annual letter to Berkshire Hathaway shareholders on Saturday.
• The billionaire investor touted his lucrative, decades-long bets on Coca-Cola and American Express.
• Buffett defended Berkshire's stock buybacks and tax payments, and trashed manipulated earnings.

Warren Buffett struck a proud, reflective tone in his annual letter to Berkshire Hathaway shareholders, published on Saturday.