President Joe Biden promised more than a million extra doses will roll out next week, but his top COVID-19 advisers caution it will be months before everyone can get one. WATCH THE FULL EPISODE OF 'WORLD NEWS TONIGHT': https://bit.ly/2NJlYKj 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 #COVID19