US President Donald Trump never fails to stay from headlines.

Not only do his comments make waves ? the latest case in point being how he told NATO member countries to "finally contribute their fair share" ? but his actual, in-person behaviour as well.

Trump indifferently shoved aside Montenegrin Prime Minister Dusko Markovic ? almost like a bulldozer steamrollering past insignificant elements in its path ? as he walked with leaders of various NATO countries during his Thursday visit to the organisation's new headquarters in Brussels.

'America First', eh?

Poor Markovic is surprised at first to see who suddenly tried to swoosh past him, but then reassuringly smiles and pats like any person would to a stubborn child trying to get his wish fulfilled.

But it doesn't stop here.

Trump then goes on to adjust his jacket, bringing the lapels together but staying unaware that he just pushed the leader of the newest NATO member country, who didn't even mind.

Or... Markovic wanted to make a good impression.

Nevertheless, Twitter is obviously having a field day.

Even the Trump-slamming, extremely-vocal-about-injustice, Harry Potter author J.K. Rowling jumped in.

However, Trump spokesman Sean Spicer said, "I have not seen the video," when asked to comment on the incident, USA Today reported.