Page charged that Yahoo knew the information was wrong but published it anyway.
They printed the allegations including those portions that falsely accused Dr. Page of participating in an alleged conspiracy to commit crimes against the U.S. Democratic Partys Leadership, not to mention a conspiracy to undermine American democracy and the 2016 U.S. election, the suit states.
https://nypost.com/2017/09/14/ex-trump-aide-carter-page-sues-yahoo-huffpost-for-defamation/
And if the Yahoo story is accurate when it claims Page didn't respond to requests for comments, then how can he possibly prevail in a lawsuit? They gave him every opportunity to deny the allegations that were the basis of the investigation, right?