Lindt & Sprungli's acquisition of US confectioner Russell Stover Candies has come as a surprise to analysts. It is the Swiss group's first purchase for 16 years and one in a developed, rather than emerging, market. However, Lindt believes it would be have been foolish to pass on the opportunity and expansion in developing markets is still on the cards. Hannah Abdulla finds out what prompted Lindt to dust off its chequebook.