The Secretary General's meeting with Trump comes ahead of a potentially bruising leaders' summit in July. Relations between the Trump administration and Europe remain fractious over the war in Iran, with the US cutting its European defence commitments drastically. #EuropeNews

According to the publication, Mark Rutte's ability to sway the US leader was tested back in January, when Trump spoke of his intention to gain control over Greenland

The NATO chief seeks to manage the U.S. president while appeasing other alliance members.