En route to his historic meeting with North Korean leader Kim Jong-un after leaving the summit early, Mr. Trump used Twitter to declare Mr. Trudeau "dishonest and weak" after the Prime Minister reiterated Canada's already announced plans to retaliate for Mr. Trump's tariffs with levies on certain US goods.
Morneau said that during the G7, Canadian officials had the opportunity to present Trump and his team some numbers that Morneau described as indicative of how trade works between the two countries.
The move enraged Trump, who branded his Canadian counterpart "dishonest and weak" in a furious tweet, announcing the United States would pull out of an agreed communique.
U.S. President Donald Trump, right, takes his seat after arriving late for the G7 and Gender Equality Advisory Council Breakfast, as IMF Managing Director Christine Lagarde looks on, left, at the G7 leaders summit in La Malbaie, Que., on Saturday, June 9, 2018.
"There's a special place in hell for any foreign leader that engages in bad-faith diplomacy with President Donald J. Trump and then tries to stab him in the back on the way out the door", Navarro told Chris Wallace on "Fox News Sunday".
Sen. Dianne Feinstein (D-Calif.) said it was wrong for Trump to pull out of the joint G7 communique that would have showed solidarity with America's best allies.
Trump clashed with Trudeau after the prime minister said Canada would enact retaliatory tariffs in response to USA tariffs on steel and aluminum imports.
He wrote on his Twitter profile: "Please tell Prime Minister Trudeau and President Macron that they are charging the USA massive tariffs and create non-monetary barriers".More news: Pole Sitter Vettel Says ‘I could have been even faster’ in Qualifying
Trudeau "kind of stabbed us in the back", Kudlow said.
In his earlier interview, Kudlow said he personally negotiated with Trudeau during the two-day G7 summit in Quebec and insisted the US agreed to the language in the communique in good faith. Trudeau was "weak" and "dishonest" for denouncing American tariffs on Canadian steel and aluminum, and announcing, as Canadian Foreign Minister Chrystia Freeland had a week prior to the G7 summit, that Canada would retaliate with its own tariffs on American goods?
The Prime minister's spokesman tweeting that what Trudeau said wasn't anything he hadn't already said to Trump himself.
Merkel said that "taking it back by tweet was of course sobering and also a little depressing".
A few hours earlier, Trudeau had told reporters that all seven leaders had come together to sign the joint declaration.
"The United States has been taken advantage of for decades and decades", Trump said.
Bizarrely, Trump admitted that he levied the tariffs in response to Canadian dairy protections - not for security reasons - and yet he called Trudeau a liar.