Greece's finance minister says the country and its creditors have a "moral and political responsibility" to swiftly conclude much-delayed bailout talks, but Athens will not budge from its key negotiating positions.

Stock markets fell in the eurozone and Greece as expectations were low for a breakthrough on Monday.

Yanis Varoufakis will meet later in the day with his eurozone peers, which provide the bulk of the loans keeping Greece afloat.

Despite three months of talks, Greece and its creditors have failed to agree on further reforms and savings Athens needs to qualify for a 7.2 billion euro ($8 billion) loan installment. Without the cash, Greece could go bankrupt within weeks.

Varoufakis says Greece's left-led government will reject any deal that doesn't guarantee a credible prospect of ending Greece's crisis.