The Nice truck attack comes eight months after suicide bombers targeted Paris. But this time, the attacker appears to have acted alone. How hard is it to prevent further lone wolf attacks? Roula Khalaf, deputy editor, asks Sam Jones, defence editor.<br /><br />► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
