Jin Lee/Bloomberg

Irene Rosenfeld

CEO, Kraft Foods
U.S.

Fresh from victory in Kraft's (KFT) drawn-out $20 billion takeover of British candymaker Cadbury, Rosenfeld returns to Davos this year firmly in charge of the world's No. 2 food company and soon-to-be largest confectioner. At last year's Davos, she joined a panel discussion that included Microsoft's (MSFT) Bill Gates, former U.N. Secretary General Kofi Annan, and Swedish industrialist Michael Treschow (who is also the chairman of Unilever (UL)) to discuss food security, the devastating 2008 spike in food prices, and how to alleviate global hunger.

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