U.S. warns G7 of global economy ‘accident’ without Greece deal as Europe pushes ultimatum deadline to the end of June

The United States warned on Friday of a possible accident for the world economy if Greece and its creditors miss their June deadlines to avert a debt default.

With Athens struggling to make repayments due next month, the debt stand-off between Greece and its European Union partners overshadowed a meeting of policymakers from the Group of Seven rich nations otherwise held to focus on ways to get the global economy growing strongly again.

U.S. Treasury Secretary Jack Lew repeated warnings not to minimise the global stability risk of Greece sliding out of the euro zone, even if most of its debt is no longer held by commercial banks.

“There is great uncertainty in there at a time when the world needs greater stability and certainty,” Lew told reporters after the G7 meetings.

Greece, which has been stuck in a deep debt crisis for the past five years, is due to pay back 300 million euros (216 million pounds) to the International Monetary Fund next Friday, although the IMF has said that deadline could be pushed back until later in June.

On June 30, Greece’s bailout expires, meaning it would be unable to call on cash currently available to it but which is not allowed to use.

Lew said time was precious. “If you look from January until now, too much time has been spent unproductively,” he said.

He called for agreement quickly on the broad terms of a deal to avoid the risk of stumbling on difficult details at the last moment: “I think waiting until the day or two before whatever the deadline is, is just a way of courting an accident.”

Greek officials earlier this week said they were close to an outline agreement. That claim was quickly quashed by top officials from euro zone countries and the IMF.

German Finance Minister Wolfgang Schaueble said on Friday there was no indication of a breakthrough. “The positive news from Athens is not fully reflected in the talks,” he said.

France struck a more optimistic note, however, saying officials were not considering the possibility of Greece leaving the euro zone.

“There is no Grexit scenario,” Finance Minister Michel Sapin told reporters