The International Monetary Fund has lost patience over Greece and is making it known.
European Central Bank chief Mario Draghi urged all sides in the negotiations on Greece "to go the extra mile", but insisted the ball was in Athens' court.
Athens will stand its ground until its creditors become "realistic", a day after last-ditch debt talks collapsed and raised fears of a Greek default.
Crunch bailout talks between Greece and its EU-IMF creditors ended without a deal on Sunday, with a "significant gap" still remaining.
Greece's creditors piled pressure on cash-strapped Athens as the IMF pulled its team out of talks and the EU warned Athens to stop gambling with the possibility of default.
The EU's Economic Affairs Commissioner Pierre Moscovici said he believed "more than ever" that a debt deal was possible between Greece and its creditors.
Greek Prime Minister Alexis Tsipras was expected to meet with Angela Merkel in Brussels after the EU's top official for the euro said a breakthrough bailout deal could be "days" away.
Greek Finance Minister Yanis Varoufakis warned that EU leaders had a duty to avoid a historic "failure" and urged a swift accord in Greece's debt talks with its creditors.
European Commission President Jean-Claude Juncker refused a request from Prime Minister Alexis Tsipras to talk on the phone.
The IMF confirmed that Greece will be bundling four debt repayments due in June at the end of the month, averting the possibility of a Greek default.
European Commission head Jean-Claude Juncker said that "challenging" negotiations with Greece would continue, after late-night talks with premier Alexis Tsipras broke up without a deal.
Greece still rejects some of the reform plans put forward by its EU-IMF creditors but sees a willingness to reach a deal in coming days.
Greece's Prime Minister Alexis Tsipras on Monday attacked the country's creditors for insisting on what he described as "absurd" reforms.
Greece's Prime Minister Alexis Tsipras on Sunday attacked its creditors for insisting on what he described as absurd reforms.
Finance ministers and central bank governors of the Group of Seven wealthiest nations gathered in Dresden to discuss the global economy and tax evasion.
Spanish Economy Minister Luis de Guindos said he expects Greece will reach an agreement with its bailout creditors in the "coming days".
Far from the limelight of Cannes, Greece's last painter of film posters toils away in a little garden studio to deliver his latest commission.
Greece's left-wing government will not abandon its refusal to cut salaries and pensions in tough talks with its EU-IMF creditors.
Greece will plead for leeway from an unwavering Europe, in a fresh effort to free up cash after months of deadlock in bailout talks.
Greek Prime Minister Alexis Tsipras discussed energy cooperation with Russian President Vladimir Putin in a telephone conversation.