Conflicting statements and denials flew between Athens and Brussels yesterday in a war of nerves highlighting the depth of mutual mistrust over a new round of negotiations on an 86 billion euro bailout that started this week.

Any hope of a fresh start in fraught relations between Greece’s leftist government, purged of its most radical members, and the institutions representing its creditors, appeared to be dashed by the flurry of assertions and rebuttals.

Differences included the pace and conduct of bailout talks, whether or not Greece needs to enact further laws before a deal, the reopening of the Athens stock exchange and the activities of former finance minister Yanis Varoufakis, who continues to heap abuse on the creditors in his blog.

The two sides couldn’t even agree on when the talks began.

A Greek Finance Ministry official said the heads of the European Commission and International Monetary Fund delegations would arrive today for talks on a third bailout programme to keep Greece afloat in the euro zone.

Technical negotiations would be wrapped up by Friday, with “follow up” discussions over the weekend under exceptional circumstances, he added.

“Both sides aim to reach a deal as soon as possible,” the official said.

European Commission officials dismissed that timetable, saying European mission chiefs were already on the ground and talks had begun on Monday. But they made clear the creditors would not be stampeded into a rushed agreement without detailed reform commitments in writing.

Commission spokeswoman Mina Andreeva said there was “no fixed deadline” for the conclusion of a Memorandum of Understanding, and if all parties kept to commitments made at a July 13 euro summit, “an agreement by the second fortnight of August is possible”.

Greek officials were at pains to play down what they see as the humiliating and intrusive aspects of the talks – access to ministries, the right to examine accounts and question civil servants, and the visible presence of the negotiators in Athens.

The Finance Ministry official said there had been no organisational issues and all discussions were taking place at the institutions’ residence. When required, creditors’ representatives had met with Greek officials at the Bank of Greece and the State General Accounting Office.

EU officials said security and logistical issues had delayed the start of the talks, originally planned for last Friday.

The Greek official said suggestions that Greece needed to pass further reform legislation before a bailout deal were not justified by the euro summit statement or subsequent exchanges.

However, eurozone officials made clear that Athens must enact measures to curb early retirement and close tax loopholes for farmers before any new aid is disbursed.

Greece needs more finances by August 20, when it owes a €3.5 billion payment to the European Central Bank.

Hanging over the new talks is the legacy of Varoufakis, whom Tsipras sidelined in the final phase of the talks before accepting even more stringent bailout terms this month.

The Marxist academic resigned after Tsipras rejected his proposals for radical steps to create a parallel payment system to get around the closure of Greek banks and the imposition of capital controls on June 28.

But he continues to create problems for the premier by denouncing the bailout agreement and also accusing the creditors of having treated Greece like a colony.

EU Commission spokeswoman Andreeva denied as “false and unfounded” allegations by Varoufakis that the creditors had taken control of the finance ministry’s general secretariat for public revenue.

He made the charge in explaining why he had devised a covert system for hacking into citizens’ tax codes.

“The Commission and the IMF only provide technical assistance to the tax administration, but certainly do not control the secretary general for public revenues,” Andreeva said. “Alleging that the troika would be controlling the secretary general for public revenues is simply not true.”

A Greek government official stressed that Varoufakis’s plan had never been carried out and no laws had been broken.

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