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Trump Russia claims: US spy chiefs testify in Congress Trump Russia claims: FBI confirms it is investigating Russian election 'interference'
(35 minutes later)
Two US intelligence chiefs are testifying before Congress over possible links between Russia and Donald Trump's election campaign. FBI director James Comey has confirmed for the first time that the FBI is investigating alleged Russian government interference in the 2016 election.
They will also address Mr Trump's unsubstantiated claim that he was wiretapped by predecessor Barack Obama. That includes investigating possible links between individuals in the Trump campaign and the Russian government and whether there was co-ordination between the Trump campaign and Russia, he said.
FBI director James Comey and NSA chief Admiral Mike Rogers are giving evidence at a rare open hearing of the congressional intelligence committee. The FBI would also assess whether crimes were committed, he said.
Mr Trump has called the investigation a "total witch hunt". Mr Trump has denied any collusion.
Russia denies attempting to influence the US presidential election. Russia has always denied attempting to influence the US presidential election.
The FBI director was speaking at a rare open hearing of the congressional intelligence committee, which is also investigating possible links between the Trump campaign and Russia.
Mr Comey said the investigation was "very complex" and said he could not give the committee details that were not already publicly known.
He also said he could not give a timetable for its completion.
"We will follow the facts wherever they lead," he said.
Also testifying before the committee is National Security Agency (NSA) chief Admiral Mike Rogers.
He said the NSA stood by an intelligence community report published in January, which said that Russian President Vladimir Putin had ordered a campaign to harm the campaign of Mr Trump's rival, Hillary Clinton.
Devin Nunes, the Republican chairman of the House of Representatives Intelligence Committee, denied a claim by Mr Trump that Trump Tower had been wiretapped.
Mr Trump had tweeted earlier this month that former president Barack Obama had ordered a wiretap.
"Let me be clear: We know there was not a wiretap on Trump Tower," he said.
However it was still possible that other surveillance activities had been used against Mr Trump and his associates, he said.
What are the allegations?What are the allegations?
In January, US intelligence agencies said Kremlin-backed hackers had broken into the email accounts of senior Democrats and released embarrassing ones in order to help Mr Trump defeat Hillary Clinton.In January, US intelligence agencies said Kremlin-backed hackers had broken into the email accounts of senior Democrats and released embarrassing ones in order to help Mr Trump defeat Hillary Clinton.
A report by the CIA, FBI and National Security Agency (NSA) said Russian leader Vladimir Putin "ordered" a campaign aimed at influencing the election.
Since then, Mr Trump has faced allegations that his campaign team had links to Russian officials.Since then, Mr Trump has faced allegations that his campaign team had links to Russian officials.
Republican Devin Nunes, chairman of the House intelligence committee, and Adam Schiff, the panel's top Democrat, are leading an investigation into the allegations.
Mr Nunes said on Sunday that based on "everything I have up to this morning" there is "no evidence" that the Trump campaign colluded with Russia.Mr Nunes said on Sunday that based on "everything I have up to this morning" there is "no evidence" that the Trump campaign colluded with Russia.
Former Director of National Intelligence James Clapper has also said he saw no evidence of any collusion, up until the time he left his post in January.Former Director of National Intelligence James Clapper has also said he saw no evidence of any collusion, up until the time he left his post in January.
However, Mr Schiff said the material he had seen offers circumstantial evidence that US citizens collaborated with Russians to influence the vote. However, Adam Schiff, the committee's top Democrat, said the material he had seen offers circumstantial evidence that US citizens collaborated with Russians to influence the vote.
"There was circumstantial evidence of collusion; there is direct evidence, I think, of deception," Mr Schiff said. "There's certainly enough for us to conduct an investigation."
Which campaign members have been accused of deception?Which campaign members have been accused of deception?
Two senior officials in the Trump administration have been caught up in the allegations - former national security adviser Michael Flynn, and Attorney-General Jeff Sessions.Two senior officials in the Trump administration have been caught up in the allegations - former national security adviser Michael Flynn, and Attorney-General Jeff Sessions.
Mr Flynn was fired last month after he misled the White House about his conversations with the Russian ambassador before he was appointed national security adviser.Mr Flynn was fired last month after he misled the White House about his conversations with the Russian ambassador before he was appointed national security adviser.
He allegedly discussed US sanctions with ambassador Sergei Kislyak. It is illegal for private citizens to conduct US diplomacy.He allegedly discussed US sanctions with ambassador Sergei Kislyak. It is illegal for private citizens to conduct US diplomacy.
Meanwhile, Mr Sessions was accused by Democrats of lying under oath during his confirmation hearing in January.Meanwhile, Mr Sessions was accused by Democrats of lying under oath during his confirmation hearing in January.
He said he had "no communications with the Russians", but it later emerged that he had met Mr Kislyak during the campaign.He said he had "no communications with the Russians", but it later emerged that he had met Mr Kislyak during the campaign.
Mr Sessions denied any wrongdoing, but removed himself from an FBI inquiry into Russia's alleged interference in the election.Mr Sessions denied any wrongdoing, but removed himself from an FBI inquiry into Russia's alleged interference in the election.
What about Mr Trump's claims against Mr Obama? What impact have Mr Trump's claims against Mr Obama had?
Monday's hearing is also expected to address President Trump's claims that the Obama administration wiretapped his phone at Trump Tower in New York during the campaign.
Mr Trump has provided no evidence, and senior Republican and Democratic officials have dismissed the idea. Mr Obama's spokesman dismissed the claims.
Mr Nunes told Fox News on Sunday that a review of justice department documents provided on Friday indicated there was no such wiretap.
Several Republicans have said Mr Trump should apologise if he cannot substantiate his claims.
What impact have these claims had?
Observers say both allegations have diverted attention from the Trump administration's other policies and progress with political appointments.Observers say both allegations have diverted attention from the Trump administration's other policies and progress with political appointments.
Critics say Mr Trump's claim that Mr Obama wiretapped him has damaged the US credibility, and relations with its allies.Critics say Mr Trump's claim that Mr Obama wiretapped him has damaged the US credibility, and relations with its allies.
Last week, Mr Trump's spokesman Sean Spicer repeated claims by a Fox News analyst that the UK's GCHQ spy agency had helped Mr Obama wiretap Mr Trump.Last week, Mr Trump's spokesman Sean Spicer repeated claims by a Fox News analyst that the UK's GCHQ spy agency had helped Mr Obama wiretap Mr Trump.
The claims angered the UK government, and GCHQ rejected the allegations as "utterly ridiculous".The claims angered the UK government, and GCHQ rejected the allegations as "utterly ridiculous".
Meanwhile, Mr Trump and some Republicans have called for an investigation into intelligence leaks, including the leak that revealed details of Mr Flynn's phone calls to the Russian ambassador.Meanwhile, Mr Trump and some Republicans have called for an investigation into intelligence leaks, including the leak that revealed details of Mr Flynn's phone calls to the Russian ambassador.