"Today crystallises precisely why Putin was so eager to see Trump elected", said Ned Price, a former Central Intelligence Agency analyst and the National Security Council spokesman under then-President Barack Obama. At any rate, we are ready for this.
This year's G7 summit comes at a time, when leaders of seven major economies view the current worldwide order as a historic division between Washington and its major allies in North America, Europe and Asia.
Trump was heading into a bigger controversy over trade as other G7 leaders, including host Canadian Prime Minister Justin Trudeau, have been angered over Washington's imposition of tariffs on steel and aluminum imported from allies including Canada and the European Union. Tensions mounted between the Trump administration and fellow G7 members Canada, Germany and France when the U.S. imposed steep tariffs on imported metals from the countries.
Tension has been building over a year of policymaking that has distanced the USA from traditional allies, including by Trump's decisions to withdraw the United States from the Paris climate accord and the Iran nuclear agreement.
Trudeau, UK Prime Minister Theresa May, German Chancellor Angela Merkel and French President Emmanuel Macron all oppose Trump's trade policies, and along with Mexico vowed to impose retaliatory tariffs on USA goods.
Russian Federation was removed from the G-8, or Group of Eight, in 2014 following the occupation and annexation of Crimea from Ukraine.
"Looking forward to straightening out unfair Trade Deals with the G-7 countries".
At last year's G7 summit in Sicily, the leaders all signed a communique, but the statement made clear there were deep differences on the Paris climate change accord.
Some foreign policy experts said Mr. Trump had a point about bringing Russian Federation back to the table with the Group of 7.More news: United Kingdom top court says can't enforce abortion law change in Northern Ireland
More news: NJ Sen. Menendez projected to win Democratic primary after surviving ethics scandal
More news: Belgium shooting: Gunman disarmed police
Media captionDairy wars: Why is Trump threatening Canada over milk?
Senate Democratic Leader Chuck Schumer said in a statement that Trump was turning USA foreign policy "into an global joke". We responded from the very beginning that such personal meetings were not just a possibility but were useful ...
In the days leading up to the summit, Trudeau and Macron have severely criticized Trump's new tariffs, which critics say threaten to drive up prices for American consumers and companies and heighten uncertainty for businesses and investors around the globe.
Putin expressed great thanks for Xi awarding China's first Friendship Medal to him, saying that it is not only the highest honor given to himself, but also reflects the high level of Russia-China comprehensive strategic partnership of coordination, as well as Chinese people's profound friendship towards Russian people.
Leaders of the seven richest nations vowed to send a "strong message" that interference by Russian Federation and other foreign states will "not be tolerated", Prime Minister Theresa May said. "If it doesn't happen, we come out even better!" the president wrote on Twitter, hours before his arrival in Quebec.
In Paris, Macron's office said it wouldn't make sense and pointed out that the latest country to impose economic sanctions on Russian Federation was the US Italy's new premier, Giuseppe Conte, tweeted that he agreed with Trump, saying: "Russia should go back into the G-8".
Mr Trump is due to leave early on Saturday to head to Singapore for a landmark meeting with North Korean leader Kim Jong-un.