Is NATO still fit for purpose?

NATO leaders prepare to mark the alliance's 70th anniversary, but is the old military association fit for purpose?

Also in the programme: Germany's grand coalition thrown into doubt.

And a United Nations summit on climate gets underway in Madrid.

Joining Julian Worricker to discuss these and other issues are Shachi Kurl, executive director of the Angus Read institute, a non-partisan polling organisation in Canada; and Seyi Rhodes, a reporter and journalist.

(Image: NATO headquarters in Brussels, Belgium. Credit: Reuters)