Did Yoko Ono keep The Beatles together during a rough period?

David Sheff, author of the autobiography “Yoko,” joins Bob Sirott to explain why he felt the need to tell Yoko Ono’s story, how his friendship with her began, and what it was like interviewing John Lennon and Yoko together. He also talks about Yoko’s struggles after John’s death, why she and John moved to the U.S., and how it’s said that she probably kept The Beatles together longer rather than being one of the reasons for their breakup.