In the FT letters, Prof Robert H. Wade argues rising national inequality since 1990 - not only in the US but in countries containing perhaps as much as 80 per cent of the world's population - was one of the main forces driving global financial fragility.
http://www.ft.com/cms/s/0/68a4de1c-b6c5-11de-8a28-00144feab49a.html
