Before long, we may be calling them the ZAG states: Zambia, Argentina and Greece, the three nations to have defaulted on loans from the International Monetary Fund, based in Washington, D.C. To be clear: Greece has not yet added its name to the short list. Greek officials on Friday insisted they remained earnest about attempts to broker an agreement to free up fresh bailout funds and avert an end-of-month default, the Financial Times reported.