That prepared the ground for Trump's attack on the Canadian prime minister, Justin Trudeau, and the USA withdrawal from a communique on trade negotiated in an attempt to defuse tensions over Trump's protectionist policy. "He is essentially double-crossing - not just double crossing President Trump, but the other members of the G7, who were working together and pulling together this communique", Kudlow said. Trump tweeted in response.
"We also agreed that we want to reduce tariffs and remove trade barriers and also to reduce subsidies", Merkel said at her closing press conference.
Trump infuriated his G7 allies recently by slapping them with the hefty tariffs on steel and aluminum - a move that prompted Canada and the European Union to threaten duties of their own.
"I think we had a very open and direct discussion this afternoon, we've always had this kind of discussion".
Kudlow lashed out at Trudeau first during an appearance on CNN's "State of the Union".
The Elysee Palace was responding to questions about the outcome of the summit, after US President Donald Trump refused to give his backing to a joint declaration, despite hours earlier signing the communique. President Trump had shown up late, suggested Russian Federation rejoin the alliance over his allies' objections, harangued leaders over supposedly unfair trade practices, and generally acted as a one-man diplomatic wrecking ball.More news: Arnautovic tells Mourinho he's 'happy' at West Ham
"In a matter of seconds, you can destroy trust with 280 Twitter characters", German Foreign Minister Heiko Maas said when asked about Trump's U-turn, adding it would take much longer to rebuild lost trust.
The president warned America would win any trade war if they tried to retaliate against new tariffs on imported steel and aluminum.
"Canadians are polite and reasonable, but we will also not be pushed around", the prime minister said.
However, former US ambassador to Canada Jim Blanchard said the auto sector in the USA won't tolerate this threat of more trade action, saying that both that industry and American farmers want to see a renewed trade relationship with Canada.
In response to Trump's tweets, the PMO released a statement shortly after that simply read, "The Prime Minister said nothing he hasn't before - both in public, and in private conversations with the President".
White House Trade Adviser Peter Navarro had even harsher words for Trudeau.More news: President Donald Trump not inviting NBA champions to White House
Kudlow said Kim must not see "American weakness" on the eve of the Tuesday summit.
"Not to sign a statement of solidarity, which stands for everything that we stand for, is a big mistake", Feinstein said.
Russian Federation was suspended from the group in 2014 because of its annexation of Crimea from Ukraine.
He insisted, like Trump himself has done many times, that Canada has enormous tariffs itself - especially on certain dairy and food products.
Trump and European allies are also at odds over Trump's decision to pull the United States out of the deal in which Iran curbed its disputed nuclear programme in exchange for sanctions relief, and the Paris climate change accord.
The G7 countries, in the communique, "acknowledge free, fair, and mutually beneficial trade is a key engine for growth and jobs", and commits these nations to modernize the World Trade Organization (WTO).More news: Pakistan Navy celebrates World Oceans Day