Paul McCartney has vowed to stay friends with Heather Mills after their bitter divorce, the U.K.'s Daily Mirror reports.

McCartney, 65, says he wants to maintain a "close and cordial" relationship with Mills, 40, for the sake of their 4-year-old daughter Beatrice, the paper reports.

"Paul doesn't want to be at war," a friend told the Mirror.

A close source reportedly said: "Paul is an old hippie at heart. He holds true to the principles of the '60s — love, peace and understanding.

"It may sound surprising after everything Heather has put him through, but he'll do his damnedest to make sure they stay friends.

"He doesn't want war. He just wants to get on with his life, concentrate on Beatrice and put the whole sorry episode behind him."

Earlier this week, a British judge granted Mills a $48.7 million settlement — but blasted her as an "explosive and volatile character" and said she was "her own worst enemy."

Mills will appear as a judge on Donald Trump's Miss USA pageant next month.

Click here to read more in the Daily Mirror