Inside Europe: Turkey angry over border force in Syria

The US-led coalition is training allies to be part of a new force of 30-thousand troops in Syria. One of the areas the force will patrol is the border with Turkey controlled by Syrian Kurdish alliance, the YPG. But Turkish President Recep Tayyip Erdogan has threatened to “strangle” the planned US-backed force “before it’s even born.” DW's Istanbul correspondent Dorian Jones talks to Keith Walker.