DONALD Trump has been ridiculed on social media for appearing to push Montenegro Prime Minister Dusko Markovic out of the way to get to the front of a group of NATO leaders.

Video shows Mr Trump placing his right hand on Mr Markovic's arm and pushing himself ahead in the pack.

It got the attention of the other leaders, who watched as he adjusted his jacket with a seemingly smug smile on his face after the incident.

Mr Markovic did not make any comment.

Mr Trump has not hid his disdain for NATO, which he has called "obsolete" because it is not "taking care of terror."

In an address to other NATO leaders today he lectured them on needing to "finally contribute their fair share" in the alliance.

Mr Trump claims 23 of the 28 member nations are not paying what they should and it's "not fair" to the people of the United States.

"Many of these countries owe massive amounts of money from past years," he said, adding that the target they had committed to - two per cent of each country's GDP to be spent on defence - was merely "the bare minimum".

The press pool reports that Mr Trump and the other NATO leaders subsequently "ignored one another during a 'family photo op'."

The president's shoving of Mr Markovic is just the latest in a string of intriguing moments from Mr Trump's first overseas trip. On earlier stops, First Lady Melania Trump could be seen swatting away his attempts to hold her hand.

News Corp Australia

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