The Country Risk Service publishes regular ratings on 120 sovereigns. The ratings for emerging markets are updated monthly while those for most developed countries are updated bi-annually. The sovereign rating measures the risk of a build-up in arrears of principal and/or interest on foreign- and/or local-currency debt that is the direct obligation of the sovereign or guaranteed by the sovereign.
Only Norway and Finland scored AAA -- that means the country has capacity and commitment to honour obligations not in question under any foreseeable circumstances.
Only one country Zimbabwe has D -- that means very weak capacity and commitment to honour obligations. Poor payment record. Currently in default on significant amount of obligations.
(According to the February 2009 report.)