After Trump's angry tweets, Trudeau's office issued a brief response: "We are focused on everything we accomplished here at the G7 summit". She also said the European Union would "act" against the USA trade measures. "I have made it clear to the president that [imposing retaliatory tariffs] is not something we relish doing, but it's something that we absolutely will do".
Looking for news you can trust? He said that he didn't blame them for what he saw as an unbalanced trade relationship which hurts the U.S. "We make commitments and keep them", the presidency said, adding that "France and Europe maintain their support for this (G7) statement". "Minimum is 17B. Tax Dairy from us at 270%", he wrote in the first of five tweets relating to the weekend's summit.
Trump administration members continued a war of words with a traditional US ally Sunday, accusing Canadian Prime Minister Justin Trudeau of stabbing the president's team in the back.
"In terms of the approach that governments choose to take, Canada does not believe that ad-hominem attacks are a particularly appropriate or useful way to conduct our relations with other countries", she said.
Mr Trudeau has vowed retaliatory action next month over USA tariffs on steel and aluminium.
The president also tweeted from aboard Air Force One that due to "Justin's false statements" the US would not sign on with the other six members of the G-7 to a joint communique that was to follow the meeting.
Other members of the Group of 7 stood with Canada against Trump.
Germany's Angela Merkel later described Mr Trump's decision to reject the joint communique initially agreed between the G7 leaders as "sobering" and "depressing". "Canadians are polite, we are reasonable, but we will also not be pushed around".
"The United States loses political influence in the rest of the world, and they also lose position as a centerpiece in efforts to find global joint mechanisms and set the agenda", said Solberg, who had been invited to attend the summit.
A United States official said on Monday that Trump and Kim will first meet one on one with translators in a session that could last up to two hours before they open the meeting to their respective advisers.
He complained that he had been blindsided by Canadian Prime Minister Justin Trudeau's criticism of his tariff threats at a summit-ending news conference.
White House economic adviser Larry Kudlow and Canadian Prime Minister Justin Trudeau.
And Roland Paris, a former foreign policy adviser to Trudeau, jabbed on Trump on Twitter: "Big tough guy once he's back on his airplane". That was a part of Trudeau's mistake.
Trump and Trudeau tensions appears to have been sparked by America and Canada's recent clashes over trade tariffs.
Tusk's comments came shortly after President Trump's trade adviser Peter Navarro said there was a "special place in hell" for leaders who betrayed Trump.
The joint communique that was thrashed out over two days of negotiations in Canada vowed that members would reform multilateral oversight through the World Trade Organization (WTO) and seek to cut tariffs.