From a 12.30.17 N.Y. Times piece, written by Sharon LaFraniere, Mark Mazzetti and Matt Apuzzo: “The hacking and the revelation that a member of the Trump campaign may have had inside information about it were driving factors that led the F.B.I. to open an investigation in July 2016 into Russia’s attempts to disrupt the election and whether any of President Trump’s associates conspired.

“If Mr. Papadopoulos, who pleaded guilty to lying to the F.B.I. and is now a cooperating witness, was the improbable match that set off a blaze that has consumed the first year of the Trump administration, his saga is also a tale of the Trump campaign in miniature. He was brash, boastful and underqualified, yet he exceeded expectations. And, like the campaign itself, he proved to be a tantalizing target for a Russian influence operation.

While some of Mr. Trump’s advisers have derided him as an insignificant campaign volunteer or a ‘coffee boy,’ interviews and new documents show that he stayed influential throughout the campaign. Two months before the election, for instance, he helped arrange a New York meeting between Mr. Trump and President Abdel Fattah el-Sisi of Egypt.

“The information that Mr. Papadopoulos gave to the Australians answers one of the lingering mysteries of the past year: What so alarmed American officials to provoke the F.B.I. to open a counterintelligence investigation into the Trump campaign months before the presidential election?

“It was not, as Mr. Trump and other politicians have alleged, a dossier compiled by a former British spy hired by a rival campaign. Instead, it was firsthand information from one of America’s closest intelligence allies.”

“Interviews and previously undisclosed documents show that Mr. Papadopoulos played a critical role in this drama and reveal a Russian operation that was more aggressive and widespread than previously known. They add to an emerging portrait, gradually filled in over the past year in revelations by federal investigators, journalists and lawmakers, of Russians with government contacts trying to establish secret channels at various levels of the Trump campaign.”