(Bloomberg) In countries where the threat of default never goes away, there’s a trading strategy that’s delivering big returns. Most Read from BloombergSingapore Money Laundering Case Embroils Its Banking GiantsCitadel Vets 69,000 Intern Applicants to Find Next Math GeniusesPutin Agrees to Visit China in First Trip Since Arrest WarrantWhat to Do With a 45-Story Skyscraper and No TenantsCrypto Scores Landmark US Legal Win With Grayscale ETF RulingIt works like this: find companies that are res