Story highlights He's already had another awkward encounter while there with France's President

He's there for the NATO summit

Washington (CNN) While walking with the NATO leaders during his visit to the alliance's headquarters Thursday, President Donald Trump pushed aside Dusko Markovic, the prime minister of Montenegro, as he moved to the front of a group of the leaders.

Trump is at the brand-new NATO headquarters in Brussels for a summit with world leaders. It's his first NATO summit alongside the 27 other members of the military alliance.

Here's the whole encounter with Markovic:

Did Trump just shove another NATO leader to be in the front of the group? pic.twitter.com/bL1r2auELd — Steve Kopack (@SteveKopack) May 25, 2017

Trump's visit was highly anticipated after he repeatedly criticized the NATO military alliance as a candidate.