CLEAN : NATO invites Montenegro to join alliance Stoltenberg 2

The transcript discusses the anticipation and significance of Montenegro receiving an invitation to join NATO. It highlights the long journey since Montenegro restored its independence and began EU accession talks. The decision is seen as a recognition of Montenegro's efforts and a testament to NATO's open-door policy.

What was the significance of the summit in Riga for NATO?

What does the phrase 'NATO's door is open' imply about the organization's stance?