The charge that some euro-zone countries were seeking to engineer a Greek sovereign default and exit from the euro deepened the rancor between debtor and creditors in the dangerous standoff."There are many in the euro zone who don't want us any more," Venizelos declared at a meeting with President Karolos Papoulias. "We are constantly being given new terms and conditions."

Papoulias went even further, denouncing Germany and Greece's north European creditors after Wolfgang Schauble, the German finance minister, said that Greece must not turn into a "bottomless pit" for euro-zone bailout funds and that Europe was better prepared than when the crisis erupted two years ago to cope with a Greek sovereign default.

"Who is Mr. Schauble to ridicule Greece? Who are the Dutch? Who are the Finns?" declared the Greek head of state. "I don't accept insults to my country by Mr. Schauble."

The bad-tempered rhetoric came as Greece's political leaders sought to assuage Berlin and Brussels by delivering on key conditions for release of the €130 billion bailout, the second in two years, which takes Greece's rescue fund to €240 billion.

Venizelos claimed the crucial debt swap with the banks – which technically requires three weeks to organize – will be announced on Monday provided the euro group signs off on the bailout.