German Finance Minister Wolfgang Schaeuble on Friday urged Greece to meet the conditions set for its next tranche of international aid and brushed aside renewed talk of a Greek default. \"It is clear that the obligations entered must be implemented,\" Schaeuble said after a meeting of Group of 20 (G20) finance ministers and central bankers in Washington. \"There is no point in speculating over the next steps,\" he said, adding that the key issue at the moment was ensuring that Greece received its next share of bailout funds. Earlier Friday, Dutch central bank chief Klaas Knot was one of the first leading members of the European Central Bank to say in public that a Greek default could no longer be ruled out, reported dpa. Greece is vying for the sixth portion of a 110-billion-euro (150-billion-dollar) bailout package, based on tough austerity measures, brokered with a \'\'troika\'\' consisting of the European Union, International Monetary Fund (IMF) and European Commission. However, Schaeuble indicated that the conditions for a second Greek rescue package, worth 109 billion euros, might need to be adjusted, based on the troika\'\'s latest report from a trip to Athens, which could reveal new financial truths when published.(