Protesters were on the streets of Helsinki to denounce the policies of both Trump and Putin.
Trump, however, had a positive attitude toward the meeting.
Indeed, the question came up at the news conference itself.
Senator Chuck Schumer, the minority leader, said never in the history of the country had an American president supported an adversary the way Mr Trump sided with Mr Putin.
McCain, who is probably Trump's fiercest Republican critic, added: "President Trump proved not only unable but unwilling to stand up to Putin". "And one thing you know, if they had it, it would have been out".
"He said it was nonsense". Seriously, you're telling me this guy only weights 239 pounds? Any statement by Vladimir Putin contrary to these facts is a lie and should be recognized as one by the president.
Monday's news conference turned on some sharp questions by Jonathan Lemire, White House correspondent for The Associated Press.
Putin said both countries considered it "necessary" to further work together on many issues, including extension of the Strategic Arms Reduction Treaty, the risky situation surrounding the development of elements of the global system of American missile defense, and the implementation of the Treaty on the Elimination of Intermediate-Range and Shorter-Range Missiles as well as avoiding weapons being placed in space.
Liina Isto deputy chair of Finns Party Youth Wing. Image Yle Zena Iovino
In the interview, Putin also pushed back against suggestions that Russian Federation may have compromising material about Trump, saying "it's clear that we did nothing of that kind of against Mr. Trump".
Prior to the closed-door meeting, the U.S. and Russian presidents shook hands and Trump did most of the talking, as cameras flashed. I will say this.
PIFER: Trump's acceptance of Putin's denial of election-meddling over the considered judgment of the US intelligence community (and the growing number of indictments of individual Russians) is astonishing.
The president did reiterate his concern about global nuclearization and said it's the "most important" issue to him. Asked if Russian Federation was at all to blame for the poor ties, he said: "I hold both countries responsible. At 90% of the nuclear power in the world between these two nations, and we've had a phony witch hunt deal it drive us apart". But Mr Trump's hold on the GOP is being put to the test by his willingness to align with Mr Putin, a leader whom Republicans routinely describe as an enemy of the United States.
Trump said he and Putin would discuss a range of issues, from trade to the military, along with missiles and China. Trump also seemed to not know which countries are part of UK, saying he believes that people "in the UK, Scotland and Ireland... There's no rush, it has been going on for many years".
Making efforts to move past the politically-charged allegations, Putin touted the summit as a "success". Trump leaned forward in his chair, his hands tented in front of him and frequently glanced over at the Russian president.
While American intelligence agencies have assessed that Putin himself signed off on a campaign to sow discord among the U.S. voting public and tilt the election in favor of President Trump, the Russian president denied his government was involved.
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