The two presidents held a two-hour closed-door negotiation with no other officials present save for the leaders' interpreters.
On Tuesday, Trump attempted to walk back his comments at the summit by claiming he meant to say he didn't see any reason why it wouldn't, instead of would, be Russian Federation.
The basis for the assessment, despite what he said was "great confidence" in his intelligence agencies, was that Mr Putin had given an "extremely strong and powerful" denial.
HORSLEY: It sounds like sort of typical Trumpian hyperbole, but some analysts I've talked with say it's not without foundation.
The moment, captured during a summit in Helsinki on Monday, shows US President Donald Trump's wife shake hands with the infamous Russian leader, only to turn away looking dismayed at the encounter.
Trump defends Putin summit, promises 'big results', Latest World News
The White House said on Wednesday that there is "still" a threat of Russian meddling in the United States elections, claiming that president Donald Trump was not referring to that issue when he responded to journalists hours earlier.
United States intelligence officials have said Russian election interference efforts are continuing and now target the upcoming congressional elections in November. "I can only say that I do have confidence in our intelligence agencies as now constituted". And, on a lighter note (we guess?), Trump made things delightfully more awkward after tossing a soccer ball Putin gifted him into the lap of his wife, Melania.
"My people came to me - Dan Coats came to me, some others - they said they think it's Russian Federation".
The president suggested he believed Putin's denials of election meddling over the conclusion of the USA intelligence community, while again asserting there was no collusion between his campaign and Russian Federation to claim the White House. Will a strong statement, you know, President (Barack) Obama supposedly made a strong statement nobody heard it.
HORSLEY: Ailsa, I have to tell you there was considerable skepticism in the briefing room about that explanation.
Pomeranz said the damage Trump made with his European Union and North Atlantic Treaty Organisation comments was significant.
"What about the "alt-left" that came charging at, as you say, the "alt-right"?" We're also living in a grown-up world. "I think the hysteria that came from the opposition party media, the full meltdown, missed the big picture".