Vice-President Joe Biden has told Donald Trump to “grow up” and criticized his attacks on the intelligence community.
On January 6, Donald Trump will be briefed on allegations that Russia meddled in the US presidential election – claims he has cast doubt on.
Joe Biden said it was “absolutely mindless” for Donald Trump not to have faith in intelligence agencies.
Russia denies hacking alleged to have helped Donald Trump defeat Hillary Clinton.
On January 5, the president-elect questioned how intelligence agencies were confident about the alleged Russian hacking “if they never even requested an examination of the computer servers” belonging to the Democratic National Committee (DNC).
In an interview with the PBS, Donald Trump: “For a president not to have confidence in, not to be prepared to listen to, the myriad intelligence agencies, from defense intelligence to the CIA, is absolutely mindless.
“The idea that you may know more than the intelligence community knows – it’s like saying I know more about physics than my professor. I didn’t read the book, I just know I know more.”
When asked what he thought of Donald Trump’s regular attacks on Twitter, Joe Biden said: “Grow up Donald, grow up, time to be an adult, you’re president. Time to do something. Show us what you have.”
The VP went on to call Donald Trump “a good man”.
Joe Biden said he had read a US intelligence agencies report outlining Russian involvement, the details of which are starting to emerge in media.
According to the Washington Post and NBC News citing intelligence sources, agencies had intercepted communications in the aftermath of the election showing senior Russian government officials celebrating Donald Trump’s win over rival Hillary Clinton.
US authorities had also identified Russian actors who delivered stolen Democratic emails to the WikiLeaks website.
NBC News says the alleged Russian hacking targeted not just the DNC but also the White House, joint chiefs of staff, the department of state and large US corporations.
An unclassified version will be made public next week.
Joe Biden said the report clearly details “that the Russians did, as a matter of policy, attempt to affect and… discredit the US electoral process”.
He said the hacking was part of a systematic campaign to undermine Hillary Clinton.
Hillary Clinton’s campaign manager John Podesta was among those hacked on the DNC server.
On January 5, the Director of National Intelligence, Gen James Clapper, told a hearing of the Senate Armed Services Committee that Russian President Vladimir Putin ordered the hack, and said the motive would be revealed next week.
President Barack Obama last week ordered the expulsion of 35 Russian diplomats from the US over the alleged hacking. Russia has said it will not reciprocate.
Donald Trump has repeatedly rejected allegations that the Russian government hacked into the computers of John Podesta or the servers of the DNC.
On January 4, the president-elect repeated a suggestion that “a 14-year-old” may have been responsible for the breach.
On January 5, he said he was a “big fan” of intelligence agencies, after months of casting doubt on the Russian link, but later went on to raise questions over how the Democratic Party responded to the security breach.
Last week, Donald Trump said he would announce information about hacking “on Tuesday or Wednesday”, but no announcement came.