Greek Finance Minister Yanis Varoufakis warned on Thursday that "an accident" in the bitter dispute between Greece and its EU-IMF creditors over unlocking vital bailout cash for Athens was drawing "dangerously close".

"I said we are dangerously close to a state of mind which accepts an accident. I told my colleagues not to accept such thinking," Varoufakis said after talks with Greece's eurozone partners broke up with no deal, increasing the risk of a Greek exit from the euro.