British intelligence passed Trump associates' communications with Russians on to US counterparts

--British and other European intelligence agencies intercepted communications between associates of Donald Trump and Russian officials and other Russian individuals during the campaign and passed on those communications to their US counterparts, US congressional and law enforcement and US and European intelligence sources tell CNN.
The communications were captured during routine surveillance of Russian officials and other Russians known to western intelligence. British and European intelligence agencies, including GCHQ, the British intelligence agency responsible for communications surveillance, were not proactively targeting members of the Trump team but rather picked up these communications during what's known as "incidental collection," these sources tell CNN.

The European intelligence agencies detected multiple communications over several months between the Trump associates and Russian individuals -- and passed on that intelligence to the US. The US and Britain are part of the so-called "Five Eyes" agreement (along with Canada, Australia and New Zealand), which calls for open sharing among member nations of a broad range of intelligence.
The communications are likely to be scrutinized as part of the Senate Intelligence Committee's investigation into Russia's efforts to meddle in the 2016 presidential election.

"If foreign intelligence agencies share information with US intelligence, and it's relevant to the investigation, then of course the intelligence committee will look at it," a source close to the Senate investigation told CNN.
The Guardian reported earlier Thursday that British alerted US Intel of such contacts.

GCHQ first became aware in late 2015 of suspicious “interactions” between figures connected to Trump and known or suspected Russian agents, a source close to UK intelligence said. This intelligence was passed to the US as part of a routine exchange of information, they added.

Over the next six months, until summer 2016, a number of western agencies shared further information on contacts between Trump’s inner circle and Russians, sources said.

The European countries that passed on electronic intelligence – known as sigint – included Germany, Estonia and Poland. Australia, a member of the “Five Eyes” spying alliance that also includes the US, UK, Canada and New Zealand, also relayed material, one source said.

Another source suggested the Dutch and the French spy agency, the General Directorate for External Security or DGSE, were contributors.

It is understood that GCHQ was at no point carrying out a targeted operation against Trump or his team or proactively seeking information. The alleged conversations were picked up by chance as part of routine surveillance of Russian intelligence assets. Over several months, different agencies targeting the same people began to see a pattern of connections that were flagged to intelligence officials in the US.

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The Guardian has been told the FBI and the CIA were slow to appreciate the extensive nature of contacts between Trump’s team and Moscow ahead of the US election. This was in part due to US law that prohibits US agencies from examining the private communications of American citizens without warrants. “They are trained not to do this,” the source stressed.

“It looks like the [US] agencies were asleep,” the source added. “They [the European agencies] were saying: ‘There are contacts going on between people close to Mr Trump and people we believe are Russian intelligence agents. You should be wary of this.’

“The message was: ‘Watch out. There’s something not right here.’”

According to one account, GCHQ’s then head, Robert Hannigan, passed material in summer 2016 to the CIA chief, John Brennan. The matter was deemed so sensitive it was handled at “director level”. After an initially slow start, Brennan used GCHQ information and intelligence from other partners to launch a major inter-agency investigation.

In late August and September Brennan gave a series of classified briefings to the Gang of Eight, the top-ranking Democratic and Republican leaders in the House and Senate. He told them the agency had evidence the Kremlin might be trying to help Trump to win the presidency, the New York Times reported.

One person familiar with the matter said Brennan did not reveal sources but made reference to the fact that America’s intelligence allies had provided information. Trump subsequently learned of GCHQ’s role, the person said.

The person described US intelligence as being “very late to the game”. The FBI’s director, James Comey, altered his position after the election and Trump’s victory, becoming “more affirmative” and with a “higher level of concern”.

Comey’s apparent shift may have followed a mid-October decision by the Foreign Intelligence Surveillance Act (Fisa) court to approve a secret surveillance order. The order gave permission for the Department of Justice to investigate two banks suspected of being part of the Kremlin’s undercover influence operation.

According to the BBC, the justice department’s request came after a tipoff from an intelligence agency in one of the Baltic states. This is believed to be Estonia.

The Washington Post reported on Wednesday that the same order covered Carter Page, one of Trump’s associates. It allowed the FBI and the justice department to monitor Page’s communications. Page, a former foreign policy aide, was suspected of being an agent of influence working for Russia, the paper said, citing US officials.

The application covered contacts Page allegedly had in 2013 with a Russian foreign intelligence agent, and other undisclosed meetings with Russian operatives, the Post said. Page denies wrongdoing and complained of “unjustified, politically motivated government surveillance”.