Security the key concern over vulnerable Tour de France

Security has become the key issue after two very different events in the space of a few hours.

Security has become the key issue of the 2016 Tour de France after two very different events in the space of a few hours on Thursday.

The chaotic and bizarre scenes at the end of stage 12 on Mont Ventoux were still being digested when news broke of a devastating terrorist attack in Nice which has left at least 84 people dead.