Kaiser’s not one to hold back (he comes in about 3:20):

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Best line in here is when he asks those Greek economists who favor higher taxes, “Why are you selling your countrymen down the road?”

“Get rid of the financial terrorists from your country.”

He could have done a better job here by keeping his cool and more clearly advocating repudiation, but maybe his approach is better suited for the state of Greek temperment at the moment.