President Joe Biden rejoined the Paris Climate Agreement and the World Health Organization. He also said he wants to restart nuclear talks with Iran. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/2NfTFDu WATCH OTHER FULL EPISODES OF WORLD NEWS TONIGHT: http://abc.go.com/shows/world-news-tonight WATCH WORLD NEWS TONIGHT ON HULU: https://bit.ly/3iQLwPp #WorldNewsTonight #PresidentJoeBiden #ParisClimateAgreement