Joe Biden says he stands 'squarely' behind his decision to pull US troops out of Afghanistan. The US president spoke after the Taliban entered Kabul and swept to power in the country, 20 years after they were removed in the US-led invasion. Mr Biden said the US mission in Afghanistan was never supposed to be nation-building. Read more here: https://news.sky.com/story/president-... SUBSCRIBE to our YouTube channel for more videos: / skynews Follow us on Twitter: / skynews Like us on Facebook: / skynews Follow us on Instagram: / skynews For more content go to http://news.sky.com and download our apps: Apple: https://itunes.apple.com/gb/app/sky-n... Android https://play.google.com/store/apps/de... Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí / @skynewsespanol