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German Chancellor Angela Merkel (CDU) and Greek Prime Minister Kyriakos Mitsotakis review the military Guard of honour in the courtyard of the the German Chancellery today Photograph: Michele Tantussi/Getty Images

Meanwhile, Greece’s new Prime Minister Kyriakos Mitsotakis is making his first official trip to Berlin since his election last month.

Our Athens correspondent Helena Smith explains:

Aides close to the centre right leader say he will not be visiting Germany with a “laundry list of demands” but rather focusing on his reform agenda “and issues that concern the present and future of Europe.”

In the past the focus of such trips, they say, had been “all about cutting us slack when it came to implementing tough fiscal measures.”

Under its third and final bailout agreement, Athens’ former leftist government committed to achieving the controversially high primary surplus of 3.5 % – a promise that has been repeatedly slammed as unrealistic.

One aide said:

“We will not be making any such requests. “Instead, this visit is going to be about setting a new tone, turning a new page in a new era.”

Mitsotakis, a former banker, says attracting investments – the cornerstone of his economic policy – will be at the centre of his talks with Angela Merkel along with his pet subject of green energy and its role in sustainable growth for Europe and tourist-dependent economies like Greece.

The two leaders have held a news conference, where Mitsotakis struck an emollient tone: