Turkey flexes on the world stage

The conflict between Azerbaijan and Armenia has taken on a new dimension with the alleged involvement of the Turkish military. Armenia says one of its fighter jets was shot down by a Turkish aircraft over the disputed central Asian region of Nagorno-Karabakh. In the summer, France accused the Turkish navy of confronting one of its frigates in pursuit of a vessel suspected of taking arms to Libya. Meanwhile Turkey's understanding with Russia and Iran over the war in Syria has strained its ties with Washington, as well as several Gulf countries. So do these events suggest that Ankara is becoming more assertive in its foreign policy? Or is this the reaction of a country that finds itself isolated and is being forced to act in order to preserve its interests? Does Turkey still see a future in NATO? And what is the long term vision of president Erdogan; are his critics right to accuse him of trying to return the country to its Ottoman past?