Is Nato still relevant?
Nato members have met in Portugal for what was billed as one of the most crucial summits in the alliance's 61-year history. What is Nato's role in the world?
At the summit leaders of Nato's 28 states backed a strategy to transfer leadership for the fight against the Taliban to Afghan forces by the end of 2014.
On Friday member states agreed a new 10-year "strategic concept", a document that defines the fundamental nature of Nato's role in the world.
What is the future for Nato? Is the organisation heading in the right direction? What impact will a timetable for transfer have on Afghanistan?
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