White House economic adviser Larry Kudlow also said Sunday that Trudeau "really kind of stabbed us in the back". "He did a whole disservice to the whole G-7".
The official North Korean news agency said Sunday Kim is prepared to talk about "denuclearization" and a "durable peace".
Tweeting from Singapore where he's scheduled to hold a nuclear summit with North Korean dictator Kim Jong Un, Trump wrote: "Sorry, we can not let our friends, or enemies, take advantage of us on trade anymore". "I'd even wish for that to happen - that two presidents meet for an extended period of time".
German Chancellor Angela Merkel has called President Donald Trump's choice to break ranks with USA allies-by backing out of a joint statement on social media and then deride foreign leaders-"a little depressing".
European Commission spokesman Margaritis Schinas said the EU "stands fully behind" the joint statement issued at the end of the G-7.
After President Trump left, from Air Force One, he rage-tweeted an attack on Canadian Prime Minister Justin Trudeau, and announced the USA was revoking its agreement to accept the joint statement of the G-7 members.
Trudeau didn't respond to questions about Mr. Trump when the prime minister arrived at a Quebec City hotel Sunday for meetings with other world leaders, though Freeland later told reporters that "we don't think that's a useful or productive way to do business". A Madawaska, Maine, mill pumps pulp from the Canadian side of the border to be made into paper on the USA side.
Trudeau said in the news conference Saturday that Canada will "move forward with retaliatory measures" on July 1 in response to the Trump administration's decision to impose tariffs on steel and aluminum imports from Canada, the European Union and Mexico.
In a series of tweets from Singapore Monday, Trump kept up the tirade while contending that "Fair Trade is now to be called Fool Trade if it is not Reciprocal".
In response to the initial tweets critical of her country and prime minister, Canada's foreign minister, Chrystia Freeland, said her nation "does not conduct its diplomacy through ad hominem attacks".
And former foreign policy advisor to Trudeau, Roland Paris, called Trump "a pathetic little man-child".
"That's what matters", he wrote. "Kim must not see weakness".
It added: "We spend two days working out a [joint] statement and commitments". Shortly before, Trudeau had announced the G7 countries had all agreed on the statement.
When Trump left Quebec, it was thought that a compromise had been reached, despite the tension and the determination of European leaders Macron and Merkel to push back against the United States president's protectionist policies. Trump said in a second tweet.
Saying Trudeau's statements are "amateurish" and "sophomoric" only "for domestic consumption", Kudlow said it was Trudeau's remarks that had prompted Trump to pull out of the joint communique.
In view of threatened United States tariffs on auto imports, which would particularly affect Germany, Grenell said that he was a "big vehicle fan" and knew how important the industry was. "The non-factual part of this is - they have enormous tariffs", Kudlow said. They didn't tell you that, did they? "You know, it's like the gig is up". "$800 Billion Trade Deficit ..."
"Not fair to the PEOPLE of America!" May said the US has already asked about negotiating a trade agreement post-Brexit and she expressed confidence that the United Kingdom government will be able to negotiate a fair arrangement.