Montenegrin Prime Minister Dusko Markovic said that he did not even notice how US President Donald Trump pushed him ahead as NATO leaders walked inside the alliance's new headquarters and prepared for a group photo, ABC News reported.

"It didn't really register. I just saw reactions about it on social networks. It is simply a harmless situation," he told reporters after the summit. 

US President Donald Trump appeared to shove the Montenegrin Prime Minister  during the visit to NATO headquarters in Brussels. In the video of the incident, a group of leaders was seen talking to NATO Secretary General Jens Stoltenberg, when Trump grasped Markovic's right arm and pushed past him to get to the front of the group.