Story highlights President-elect Trump promised new revelations about Russian hacking this week

The new Congress will be sworn in, and President Obama will visit Democrats

Washington (CNN) President-elect Donald Trump claims to have inside information on Russia's meddling in the United States' election -- and promises to reveal it "Tuesday or Wednesday."

At a New Year's Eve party at his Mar-A-Lago estate, a tuxedoed Trump maintained that another culprit aside from Russia could have been behind the election intrusion."It could be somebody else. And I also know things that other people don't know, and so they cannot be sure of the situation," he said.

Asked to describe what undisclosed information he knew, Trump said: "You'll find out on Tuesday or Wednesday."

The latest developments in Trump's denial of the American intelligence community's assessment -- widely accepted by both Democrats and Republicans -- that Russia hacked Democratic operatives' emails in a bid to help Trump defeat Hillary Clinton will be among the leading political stories this week, as Trump's transition efforts resume and a new Congress is sworn in.

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