In neither of Trump's previous meetings with Putin - informal talks on the sidelines of summits a year ago in Germany and Vietnam - did the president publicly upbraid the Russian leader, prompting questions about whether he believed the former KGB officer's denials over his own intelligence agencies' assessments of meddling.
A few scattered boos rang out from across the road.
In Edinburgh, crowds gathered outside the Scottish Parliament before setting off for the city's Meadows area for a Carnival of Resistance event, where the 20ft Trump baby balloon was flown.
Mueller is investigating possible collusion between Trump's campaign and Russian Federation.
The president flew in from Scotland, where he and his wife, Melania, spent the weekend at a golf resort he owns there. "That's why it's good if Washington and Moscow talk to each other", Maas told the Bild am Sonntag newspaper.
Putin knows it would be unrealistic to expect USA recognition of Russia's annexation of Crimea or a quick rollback of sanctions approved by Congress.
"We have asked, and the Russians have agreed, that it will be basically unstructured". In the past, Trump has pointed to denials by Kremlin officials, and says he wants a good relationship with the country.
Strzok was removed from the investigation following the discovery of anti-Trump text messages a year ago that he traded with an FBI lawyer in the run-up to the 2016 election.
An excerpt of the interview will air on Sunday while the rest will be broadcast on Monday.
Paul also told CNN's Jake Tapper on Sunday that the USA needs to continue to focus on ensuring its electoral process is protected.
Time to relax on longest leg of Tour de France
Gaviria was boxed in by Greipel in the final 200 metres and the Colombian appeared to headbutt his rival´s lower back in retaliation.
Trump tweeted Sunday that he believes no matter well how the summit with Putin goes, he'll face criticism from Democrats and the media. Look, if we can get along with Russian Federation that's a good thing.
Measure that against Trump's suggestion at a rancorous summit of the Group of Seven last month in Canada that the leading industrialized countries include Russian Federation in their elite grouping of democracies - a suggestion that got short shrift from the other nations.
President Trump playing golf at his Turnberry, Scotland, resort on July 15, during the his first official visit to the United Kingdom.
At the same time, thousands of people marched through Edinburgh to demonstrate against the USA president, following widespread protests on Friday with a massive march in London and events staged in cities including Glasgow and Belfast.
When asked about who he sees as the U.S.'s biggest foe, he said that the US has "a lot of foes".
The charges put an even greater spotlight on Trump's treatment of Putin, who has denied making efforts to intervene in the US election that Trump, a Republican, unexpectedly won.
Asked if he considered Putin to be ruthless, Trump said: "I can't tell you that..."
"I think the DNC (Democratic National Committee) should be ashamed of themselves for allowing themselves to be hacked", he said. China is a foe economically, certainly they are a foe. "But that doesn't mean they are bad", he said. It doesn't mean anything.
On Thursday, Trump described Putin as a "competitor" rather than an "enemy" and said he expected they would get on well when they hold their first summit in Helsinki.
Trump signaled as much at a joint news conference Friday with British Prime Minister Theresa May.
The president says "nothing bad is going to come out of it (Helsinki), and maybe some good will come out". In Paul's words - "They're another country. They want to do well and we want to do well". They do spy on us.
Kate Middleton and Prince William Release Prince Louis's 3 Official Christening Photos
A larger group photo included Kate's parents, Carole and Michael , and her siblings, Pippa Middleton and James William Middleton . There are also pictures with their wider family, including newlyweds Prince Harry and Meghan, Duchess of Sussex .
The White House seized on those points in a statement that offered no condemnation of Russian election interference.
The company also sent samples to the United States and Russian embassies in Helsinki.
Over the weekend, the US indicted 12 alleged Russian military intelligence officers for allegedly interfering with the 2016 presidential elections. But he says, "I think in their mind it is". It comes days after special counsel Robert Mueller's indictment of 12 Russian military intelligence agents, who are accused of interfering in the 2016 election by hacking Democrats' emails and computer networks.
Trump also sent a stern message to America's European allies just days after a rocky North Atlantic Treaty Organisation summit in Belgium.
Bolton noted that Putin has repeatedly denied any knowledge of Russian efforts to meddle in the USA election but he said the indictments cast doubts on the credibility of the Russian president's assertions.
The leaders' meeting comes as the investigation into alleged Russian meddling in the 2016 U.S. presidential election charges a total of 25 Russians in connection.
Before coming to Europe, US President Donald Trump raised eyebrows by predicting that Monday's historic Helsinki summit with Russian counterpart Vladimir Putin would be the "easiest" stage of his tour.
European Council President Donald Tusk hit back at the "foe" comments on Twitter, calling any mischaracterization of the U.S. and EU's close relationship "fake news", a phrase Trump uses often. Trump and Putin were also seen chatting as all leaders headed for an outdoor group photo.
The charges put an even greater spotlight on Mr Trump's treatment of Putin, who has denied making efforts to intervene in the USA election that Trump unexpectedly won. And that I think is what strengthens the president.
Huntsman tells NBC's "Meet the Press" that he expects that the two presidents will talk about "everything from meddling in the election to areas where we have some shared interests". Though the president has said he was "not happy" about Russia's annexation of Crimea from Ukraine, he puts the blame on his predecessor and says he will continue relations with Putin even if Moscow refuses to return the peninsula.
Donald Trump’s advice to Theresa May on Brexit: sue the European Union
And in The Sun interview, Trump suggested that Johnson, a Conservative Party rival of May's, would make a great prime minister. Asked to rate US-UK relations, Mr Trump called them the " highest level of special ".