Stemming The Flow Of Recruits To ISIS

How can you stop young people from Western Europe setting off for Iraq and Syria to fight for the group calling itself the Islamic State?

It's a question that lots of people are trying to answer in many European countries, including France, where new laws have been just been passed.

The BBC’s Lucy Williamson reports on the challenge facing the French authorities.

Note: This BBC interview can be heard in the Here & Now podcast or with the WBUR app.