Reserve Bank Governor Raghuram Rajan on Wednesday said that "we are in a world of make believe," and wondered "what exactly are the fundamentals?"

Dozens of makers of medicines and diagnostic tests have joined together in an unprecedented effort to tackle "superbugs" - infections that increasingly don't respond to drugs and threaten millions of people in countries rich and poor.

That's according to the inaugural "Best Countries" ranking from U.S. News & World Report, the University of Pennsylvania's Wharton School and global brand consultants BAV Consulting. The ranking was officially unveiled at the World Economic Forum in Davos, Switzerland, on Wednesday.