The US president earlier was in Brussels for the NATO summit. He left the meeting with positive words and reaffirmed the US commitment to the alliance. But not before sparring with fellow member countries. CGTN's Mariam Zaidi has more.

With Wednesday's drama between the U.S. and Germany behind them, NATO heads of state gathered for a celebration before concluding the summit.

NATO formally invited the Republic of North Macedonia to join the alliance despite Russian opposition.

JENS STOLTENBERG NATO SECRETARY GENERAL "Once all your national procedures are completed, and all NATO Allies have ratified your accession, you will become the 30th member of this alliance."

Thursday morning also brought praise and support for both Georgia and Ukraine. NATO once again condemned what it called Russia's illegal annexation of Crimea and raised hopes that in due time, Georgia may also one day join the alliance. Allies agreed to boost their contributions in the fight against terrorism. NATO will fund security forces in Afghanistan until 2024 plus launch a new training mission in Iraq led by Canada.

JOHN MANZA NATO DEPUTY ASSISTANT SECRETARY GENERAL FOR OPERATIONS "We're now in the phase of winning the peace. So the conventional fight is complete. It was a great victory for Iraqi forces. But now we need to sustain the development of Iraqi security institutions. And in particular what NATO is going to do is work on the professionalization of the Iraqi armed forces. Help them build schools in the field for combat skills and help them build professional military education institutions."

But as the summit wrapped up, it once again became all about one thing: Donald Trump. The U.S. President decided to hold an impromptu press conference.

DONALD TRUMP US PRESIDENT "I told people I'd be very unhappy if they didn't up their commitments very substantially. Because the U.S. has been paying a tremendous amount. Probably 90 percent of NATO and now we're very happy and have a very, very powerful, very, very strong NATO, much stronger than it was two days ago."

MARIAM ZAIDI BRUSSELS "Trump even went so far as to call the NATO meeting 'fantastic'. Asked if he might change his mind later on Twitter, he said no. Mariam Zaidi, CGTN, Brussels."