Unlock the Editor’s Digest for freeRoula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter.Once upon a time, in a collective mess, the countries of Portugal, Ireland, Italy, Greece and Spain were known by the unflattering acronym of Piigs. Too much government debt and bad loans in their banking systems then threatened the future of the euro.Now, after a lengthy state backed clean-up, the tables have turned. At least in banking, Europe’s periphery may be in better shape than its core. Banks that were once deemed...