I told Vladimir Putin to stop hacking of US election, says Barack Obama

Outgoing US President Barack Obama asserted on Friday that a September confrontation with his Russian counterpart prompted Moscow to cease its hacking of the US election.

During a meeting on the sidelines of the Group of 20 summit in China, CNN quoted Obama as saying that he insisted President Vladimir Putin to "cut it out" and told him "there were going to be serious consequences if he didn't".

"In fact we did not see further tampering of the election process," Obama said at a year-end news conference. "But the leaks through WikiLeaks had already occurred."

He unleashed a string of putdowns, describing America's Cold War adversary as "a smaller country, they are a weaker country. Their economy doesn't produce anything anyone wants to buy except oil and gas and arms. They don't innovate".

Obama attacked Republicans for siding with an arch-enemy of the US because of their dislike of Democrats.

"Ronald Reagan would roll over in his grave," Obama said of recent GOP praise of Russia.

He warned, "Mr. Putin can weaken us just like he is trying to weaken Europe if we start buying into notions that it is okay to intimidate the press or lock up dissidents."

Asked if Putin was personally implicated in approving in the election hacks, Obama described an apparatus tightly controlled by the man at the top.

"Not much happens in Russia without Vladimir Putin," he said. "This happened at the highest levels of the Russian government."

In terms of the relationship between his White House and the incoming Trump administration, Obama said there was no "squabbling" between them even amid a roiling debate over Russia's intrusion into the US election, CNN reported.

The President noted he had made "some pretty specific suggestions" to successor Donald Trump about "maintaining the effectiveness, integrity, cohesion of the office".

He has listened," CNN quoted Obama as saying. "I can't say that he will end up implementing, but the conversations themselves have been cordial as opposed to defensive in any way."

He said the issue of Russia hacks should be confronted on a bipartisan basis.

"What we have simply said are the facts," Obama said. "Based on uniform intelligence assessments, the Russians were responsible for hacking the DNC, and as a consequence, it is important for us to review all elements of that and make sure we are preventing that kind of interference through cyberattacks in the future."

"That shouldn't be a partisan issue," Obama went on. "My hope is the President-elect is similarly going to be concerned that we don't have foreign influence in our election process."

Despite his assurances, his White House has increasingly been engaged in an escalating rift with Trump's transition team over Moscow's intrusion into the US vote.

In an interview with NPR that aired on Friday, Obama attempted a balance, saying it was clear Trump and his team knew what Russia's intentions were, but arguing the issue shouldn't become mired in partisan politics.

"It requires us not to re-litigate the election, it requires us not to point fingers, it requires us to just say, here's what happened, let's be honest about it, and let's not use it as a political football but let's figure out how to prevent it from happening in the future," CNN quoted Obama as saying.

He said that Russia's cyber meddling "was not some elaborate complicated espionage scheme", arguing instead that a hyperpartisan political environment led to an obsession with leaked e-mails.

"I'm finding it curious that everybody is suddenly acting surprised that this looked like disadvantaging Hillary Clinton because you guys wrote about it everyday," Obama said. "This was an obsession that dominated the news coverage."

Overall, Obama contended, Clinton was "treated unfairly" in the presidential contest.

"I think the coverage of her and the issues was troubling," Obama said.

On China, where Trump has called for a different course, Obama said it was "fine" to re-examine the longstanding "One China" policy, which spells US recognition of Taiwan as a part of China, CNN reported.

But Obama said it was essential Trump familiarise himself with the consequences of his moves, saying his team should be briefed by current officials.

"What I have advised the President-elect is that across the board on foreign policy, you want to make sure that you're doing it in a systematic, deliberate, intentional way," Obama said. "He should want his team to be fully briefed on what's gone on in the past and where the potential pitfalls may be, where the opportunities are, what we've learned from eight years of experience."