UCTSWLM. According to a graph being shared by business blogger Derek Thompson (at the Atlantic), there is some measure of economic"dispersion" – I'm not sure what that term really means in economic terms – according to which the countries in the Eurozone have a higher "dispersion" than a hypothetical Union of Countries That Start With the Letter M. And supposedly, this "dispersion" is a bad thing, if one is considering undertaking a monetary union – e.g. the Eurozone.
Better candidates for monetary union – besides the UCTSWLM – include the Market Economies of Latin America (who is being excluded, there? – Venezuala? Cuba? it doesn't say) and the Asian Tigers, among others.
Well, anyway. I like the idea of a UCTSWLM. We could just call it the M's, for short. Or maybe… Mmmmmmm. Imagine the headline: "Mmmmmmmm economy in crisis again! Will Malawi and Mongolia ever work out their differences?"