New Zealand Prime Minister John Key on Monday expressed disappointment that the flagship company Fonterra, the country's largest exporter, had not acted more quickly to recall milk products contaminated by the bacteria which causes botulism. Fonterra on Saturday ordered an international recall of milk products, including infant formula produced by Danone subsidiary Nutricia, after finding whey produced in May 2012, had been contaminated with clostridium botulinum after passing through a dirty processing pipe.