Iran's supreme leader Ayatollah Ali Khamenei restated his country's red lines for a nuclear deal in a dramatic intervention during a meeting with President Hassan Rouhani and top officials.
French Prime Minister Manuel Valls said that there is "still a lot of work to do" if Greece and its creditors are to reach an agreement to avert a possible default.
The IMF said that it would take part in a meeting between Ukraine and its private bondholders next week, amid rising pressure on creditors to reduce the debt.
The board of British chocolate maker Thorntons said it had agreed a takeover deal by Italian rival Ferrero that values the firm at about £111.9 million.
Eurozone finance ministers will meet again in a bid to reach a final bailout deal for Greece ahead of an EU leaders' summit the following day.
EU foreign ministers formally agreed to prolong to January 2016 damaging economic sanctions against Russia to ensure it fully implements Ukraine peace accords.
Greece does not want any more help from the IMF, minister of state Nikos Pappas said on the eve of a summit.
The International Monetary Fund, deadlocked with Greece over further financial aid, approved a new loan installment for Cyprus.
Moscow warned that state-linked foreign firms in Russia could be targeted for retaliation to the freezing of Russian official assets in Western Europe over legal claims from former Yukos shareholders.
European Commission chief Jean-Claude Juncker voiced frustration with Greek Prime Minister Alexis Tsipras in a media report amid the deepening debt crisis.
A Greek exit from the eurozone would be the beginning of the end of the single currency, Greek Prime Minister Alexis Tsipras was quoted.
IMF chief Christine Lagarde warned that a resolution to five months of tortuous debt talks with Greece required "adults in the room" in an apparent sideswipe at Greek officials.
Russian officials tried to play down fears about the country's economic crisis as tensions with the West over Ukraine cast a pall over its showcase investment forum.
Moscow will extend its embargo on European Union agricultural products but is unlikely to go further if the EU extends sanctions as expected.
Greek Prime Minister Alexis Tsipras called European Commission chief Jean-Claude Juncker, their first contact on the stand-off over a bailout deal since last week.
The International Monetary Fund has lost patience over Greece and is making it known.
French President Francois Hollande arrived in Algeria for a visit aimed at tackling the "common battle" of the once bitter foes against jihadists from Mali to Libya.
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.