Since he took office, US President Joe Biden has struck a very different tone to his predecessor when it comes to the importance of NATO.
Al Jazeera's James Bays looks at how the alliance might change during his time in office and the challenges it faces.

- Subscribe to our channel:
- Follow us on Twitter: https://twitter.com/AJEnglish
- Find us on Facebook: https://www.facebook.com/aljazeera
- Check our website: https://www.aljazeera.com/