"Either he doesn't understand it, or perhaps he is being blackmailed by Russia because they may have compromising information about him or perhaps also, you have a president who really does have strong authoritarian tendencies and maybe he admires the kind of government that Putin is running in Russia", Sanders said.
The poll of 1,005 adults, conducted two days after the Helsinki meeting, is in stark contrast with Trump's assessment that the meeting was a rousing success and that those who disagree are "haters".
Merkel said that "in principle it's always good for everyone when there are talks, particularly when there are talks between these two countries".
'I said the word would instead of wouldn't, ' he says regarding Russian interference in 2016 US election. Some Russian officials expressed hope that the summit was a first step towards improving Russian relations with the US.
A White House official said the next Trump-Putin meeting would address national security concerns discussed in Helsinki, including Russian meddling.
"The sentence should have been: 'I don't see any reason why it wouldn't be Russian Federation, '" he said. The Russian Foreign Ministry started an online campaign to "Free Maria Butina".
Two letters got Donald Trump in trouble again later in the week.
Trump was asked at the end of Monday's summit in Helsinki with Russian President Vladimir Putin: "Who do you believe" - USA intelligence, which accuses Russia of election meddling, or Putin, who denies it?
U.S. Secretary of State Mike Pompeo told reporters at the United Nations later that Trump and Putin discussed how to return refugees who fled the civil war in Syria, but offered no details and did not mention any Russian proposals.
Parts of the regions that are controlled by Russia-backed separatists - the rebel "people's republics" of Donetsk and Luhansk - held their own referendums in May 2014 and declared independence from Ukraine. Fox hosts, local and congressional Republicans and former intelligence chiefs described Trump's performance with terms like "disgusting" and mused about what Putin has on the USA president.
Speaking Friday in Moscow, Anatoly Antonov did not directly respond to Trump's proposal to invite Putin to Washington later this year.
He last visited the White House in 2005, when he met President George W. Bush, who welcomed the Russian leader in the East Room as "my friend". So it is fairly horrifying to think that a USA president would leave an ambassador out to dry, simply because the president disliked the previous administration.
Republicans in Congress rejected calls from the Democrats to summon President Donald Trump's translator from the Helsinki summit, saying it would block future presidential diplomatic efforts.