"NATO", he added, "is much stronger now than it was two days ago".
It was a surprising statement after two days during which Trump's "America first" foreign policy approach had presented a significant challenge for the organization.
Trump claimed member nations had agreed to significantly boost their defense budgets and reaffirmed - after days of griping that the USA was being taken advantage of by its allies - that the US remains faithful to the accord.
"And NATO brought war back to Europe". "He seems to look at this as we do everything for them, and we provide them with benefits, and they just take advantage of us".
That 2024 goal was set in 2014.
On Thursday, Trump reiterated his criticism of NATO in a tweet, stating, "Presidents have been trying unsuccessfully for years to get Germany and other rich NATO Nations to pay more toward their protection from Russian Federation".
Trump repeated demands on the second day of the summit for countries to meet a spending target of two percent of GDP now, instead of by 2024, and to eventually double spending to four percent.
"That is something we certainly agree with", Trudeau told a news conference.
During the summit, Mr Trump also attracted criticism from both Germany and Russian Federation over his comments on the two countries' relations.
Mr. Trump's comments came ahead of his summit on Monday with Russian President Vladimir Putin in Helsinki, though the Kremlin said they were unlikely to have an impact on what was always going to be a hard meeting due to the number of disagreements between the two countries.
"There is a communiqué that was published yesterday. It's very detailed", Macron said. "It confirms the goal of two percent by 2024". "The additional money they will be putting up has been really fantastic".
Trump tweets 'very nice' letter from North Korea's Kim
State Department spokeswoman Heather Nauert said the talks will take place Sunday and the USA "will be prepared". The U.S. also risks giving the North Koreans leverage to continue diplomacy and drag out disarmament talks.
"For years presidents have been coming to these meetings and have talked about the tremendous expense to the United States, and tremendous progress has been made", Mr Trump said.
"Everybody in the room thanked me", he said, "There's a great collegial spirit in that room that I don't think they've had in many years".
Amid reports that he had threatened to pull out of the alliance due to the dispute, Mr Trump said the United States had a strong commitment.
Trump then held an impromptu press conference.
He added: 'I think it changed the fabric of Europe and, unless you act very quickly, it's never going to be what it was and I don't mean that in a positive way.
"He's been very nice to me the times I've met him".
Before he visits with Putin, Trump will visit London and the United Kingdom - where many large protests are planned against his policies.
The US President's demands triggered an emergency budget meeting in Brussels, Belgium.
Demonstrators protest next to the specially erected fence surrounding the US ambassador's residence, Winfield House, where President Donald Trump and first lady Melania Trump are staying in London on July 12.
Trump even went so far as to question whether May's plan constituted a true exit from the European Union: "The deal she is striking is a much different deal than the one the people voted on. But I'm going to a pretty hot spot right now - right? - with a lot of resignations".
Trump and first lady Melania Trump landed at Stansted Airport, 40 miles northeast of the British capital Thursday afternoon local time. "I think it's the reality show that the president loves".
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