The UK should reintroduce tougher measures to restrict terror activities, a former independent reviewer of terrorism laws has said.
Lord Carlile said the government needed to act to protect the public.
His call comes as an ex-MI6 director said security services would not be able to track all Britons who return to the UK after fighting in Syria.
The Metropolitan Police has insisted it has the tools to monitor British jihadists returning from that country.
Several Britons - including Reyaad Khan and Nasser Muthana from Cardiff - have featured in an apparent recruitment video for jihadists in Iraq and Syria.
http://www.bbc.co.uk/news/uk-27980649