A senior U.S. intelligence official with direct knowledge confirmed to NBC News that the report on Russian hacking delivered to President Obama Thursday says that U.S. intelligence picked up senior Russian officials celebrating Donald Trump's win.
The source described the intelligence about the celebration, first reported by the Washington Post, as a minor part of the overall intelligence report, which makes the case that Russia intervened in the election.
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"Highly classified intercepts illustrate Russian government planning and direction of a multifaceted campaign by Moscow to undermine the integrity of the American political system," said the official.
The source also noted, however, that communication intercepts are viewed with caution because they are subject to interpretation.
The U.S. has also identified Russian actors who turned over stolen Democratic material to WikiLeaks, the source said.
The official agreed to talk to NBC News after the Post published leaked details of the review because the official felt that the details the paper chose focused too much on the Russian celebration and not enough on the thrust of the report.