Joe Biden vows to stay on as US presidential candidate

Joe Biden has promised to stay on as Democratic presidential candidate despite making several faux pas at the recent NATO summit, including introducing President Zelensky as Putin. Also on the programme: the president of Colombia has called on the UN to make cocaine legal. He believes it will help bring peace to his country, which has battled an armed conflict for 60 years. And, do narcissists become more agreeable as they get older?(Photo: Joe Biden has faced accusations of being too old to run for US President. Credit: Shutterstock)