Watch Joe Biden Comfort Meghan McCain About Her Father's Brain Cancer Diagnosis on The View

They may sit on opposite sides of the political aisle, but Senator John McCain and former United States Vice President Joe Biden have been friends for many years. And when Joe appeared on The View on December 13, he spoke to co-host Meghan McCain (John's daughter) about her father's recent brain cancer diagnosis. 

The women of The View spoke to Biden about his new book Promise Me, Dad, which focuses on Joe's son Beau Biden's battle with brain cancer. Beau succumbed to the disease in 2015, at just 46 years old. The book is a tough read for anyone, but Meghan admitted that she found it impossible to get through after her own father's diagnosis. 

Through tears, the television personality struggled to ask Joe how he and his family coped with the terrible disease. “I think about Beau almost every day, and I was told that it doesn’t get easier but that you cultivate the tools to work with this and live with this. I know you and your family have been through tragedy that I couldn’t conceive of," Meghan began. When she became too emotional to continue talking, Joe took a seat by her side. 

Photo: ABC.com

“You may remember when you were a little kid, your dad took care of my Beau,” Joe said. “And Beau talked about your dad’s courage — not about illness, but about his courage.” Joe then told the crowd, "Her dad is one of my best friends. Her dad goes after me, hammer and tong. We’re like two brothers who were somehow raised by different fathers or something, because of our points of view.”

But, despite their different stances on topical issues, Joe said: "I know if I picked up the phone tonight and called John McCain ... and said, 'I need your help' ... he’d get on a plane and come, and I would for him, too.” Watch the touching clip below. 

The segment was deeply touching to Meghan, who took to Twitter after the show to express her gratitude for Joe's kind words. 

John also tweeted words of thanks for his old friend.