"[Trudeau] really kind of stabbed us in the back", Kudlow said.
"He did a great disservice to the whole [Group of Seven (G-7)]", he added.
Minutes after the publication of a joint communique that was approved by Trump and other Group of Seven leaders at a summit in the city of Quebec, the USA leader announced on Twitter that he was retracting his support.
"All Justin Trudeau had to do was take the win", Navarro said.
"I have made it very clear to the President that it is not something we relish doing, but it something that we absolutely will do", Trudeau said in the news conference. Trudeau, who threatened retaliatory tariffs, also said Canada would not be "pushed around".
Kudlow said the United States had spent the summit negotiating in "good faith" with Trudeau and the other assembled leaders, and that the USA had planned to sign the communique until Trudeau's news conference, which Kudlow called a "sophomoric play".
"[Trudeau] went out of his way to try to downplay tensions", said White House reporter Michael Shear. The United States' closest trading partners - the EU, Canada and Mexico - have vowed to impose retaliatory tariffs on scores of U.S. products beginning in the coming weeks.
Kudlow also insisted that Trudeau's remarks were created to make America look weak as Trump flies to Singapore for his meeting with North Korean dictator Kim Jong-un.
Kudlow, the conservative economist who directs the National Economic Council, was upset with Trudeau's comments at a press conference after the contentious Group of 7 summit in Quebec.
"We are convinced that a modernisation is perfectly possible, we are convinced that common sense will triumph", she said. Our Tariffs are in response to his of 270% on dairy!
"Germany stands by the jointly agreed communique", spokesman Steffen Seibert said in a statement.
Mr. Trump called Trudeau "dishonest & weak" after Trudeau said at a news conference that Canada would retaliate for new USA tariffs.
Trump said he doesn't blame the current leaders, but he had a sharp warning for them if they don't work with him to correct what he sees as an unfair situation.
Trudeau later said he reiterated to Trump that tariffs will harm industries and workers on both sides of the U.S. "He did him a favor and he was even willing to sign that socialist communique and what did Trudeau do as soon as the plane took off from Canadian airspace?"
In a freewheeling news conference at the G7 summit in La Malbaie, Trump defended his contentious case for bringing Russian Federation back to an expanded G8, and he riffed again on what he said are unfair trade deficits with his country. "But it did not start with this G7, but with the election of Donald Trump", said a European official.
President Trump did the courtesy to Justin Trudeau to travel up to Quebec for that summit.
Trump's presidency has been clouded by a federal investigation into alleged Russian meddling in the 2016 presidential election, and possible collusion by his campaign.
"Great meetings and relationships with the six Country Leaders especially since they know I can not allow them to apply large Tariffs and strong barriers to. United States of America".
The joint communique that was thrashed out over two days of negotiations vowed that members would reform multilateral oversight through the WTO and seek to cut tariffs.
Mercedes Delay New Engine Over 'Quality Issues'
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Kevin Durant will re-sign with Warriors
Hood recorded 15 markers, while Smith added 13 for the Cavaliers who were outscored by the Warriors by six points in the fourth. Prior to this year's finals, the Warriors already took five crowns after winning the 1947, 1956, 1975, 2015, and 2017 rings.