This week saw Mars buy Warren Buffett's stake in Wrigley, giving the US group 100% of the chewing gum maker and consolidating its confectionery businesses. On our M&A pages, we featured how South Africa's Rhodes Food Group is looking to buy local peer Pakco, Australia's Freedom Foods Group is investing in one of its partners in China and a deal in Europe's private-label bakery sector. McCormick & Co.'s dispute in India with a venture partner headed to arbitration in India and Unilever announced a shake-up to its food R&D in Europe.