It will be the first formal summit between the two leaders, although they've met twice before. Trump also rejected the joint communique signed by leaders at the conclusion of the meeting, launching personal attacks against Canadian Prime Minister Justin Trudeau in the process.
Trump will travel to Brussels, the headquarters of North Atlantic Treaty Organisation in Belgium, on Monday where he is expected to call on members of the security alliance to increase their own defence spending.
Mr. Trump's political opponents in the US will be looking for any sign that the president goes easy on Mr. Putin, which they would say bolster allegations of Trump campaign collusion with Moscow to hack the 2016 presidential election. "It helps them a lot more than it helps us, we're very far away".
Trump once again claimed the USA had a trade deficit of $151 billion with the European Union-a figure that is around $50 billion greater than his own administration's statistics, which include services as well as goods. They make it impossible to do business in Europe, and yet they come in and they sell their Mercedes and their BMWs to us.
"You can't solve problems if you're not talking about them".
He directly addressed German Chancellor Angela Merkel, a key G7 member, from the rally, saying, "The US pays four per cent of a huge GDP...and Germany which is the biggest country of the European Union, pays 1 per cent".
She said she expected unanimous agreement among NATO's 29 members on proposals to reform the alliance command structure, increase readiness for possible threats from Russian Federation on NATO's eastern flank, add a new training mission for Iraq and increase counterterrorism efforts in Afghanistan.
"Everyone in our alliance has the same goal, and that is a strong deterrent; an alliance that is unified that can face any threats that any one of our 29 members might face", she said, listing "Russia and the malign activities of Russian Federation, the efforts of Russian Federation to divide our Democratic nations" and INF treaty violations as among those threats. No, no. But I will tell you, the Secretary-General Stoltenberg is Trump's biggest fan.
The conversation made no mention of rocket ships.
Trump has frequently called the Justice Department's investigation into possible collusion between his campaign and Russian Federation in the 2016 elections a "witch hunt", and he repeated Putin's denial that Moscow interfered in the 2016 election last week in a tweet.
"The president's priority is to protect the American people and American interests, including those of our allies and partners", he said.