Former New York City Mayor Rudy Giuliani told Newsmax on Thursday he and many others knew about President Joe Biden’s mental decline for years.

New books about the Biden presidency feature claims from his former chief of staff Ron Klain that Biden was “out of it” and he was worried Biden thought he was “president of NATO.”

“I was struck by how out of touch with American politics he was,” Klain said, according to “Uncharted: How Trump Beat Biden, Harris, and the Odds in the Wildest Campaign in History,” by Chris Whipple. “He was just very, very focused on his interactions with NATO leaders.”

Read more at Newsmax© 2025 Newsmax. All rights reserved.