Ursula von der Leyen, German Defence Minister

Stephen Sackur speaks to German defence minister Ursula von der Leyen. Vladimir Putin has wrong-footed the west again; first it was in Crimea and eastern Ukraine, now it's with his rapidly escalating military intervention in Syria. The Obama administration, NATO and the EU have issued warnings and condemnations, but does the west have a coherent strategy in Syria? And does the EU have a security strategy at all?