New anti-terrorism laws pose challenge for government

Two brothers have become the first Britons to be jailed for terrorism training in Syria.

Mohommod Nawaz, 30, and Hamza Nawaz, 24, from east London, were intercepted by police in Dover on their return to the UK in September last year.

The case coincides with government ministers publishing a series of new measures to tackle terrorism.

The BBC's Security Correspondent Frank Gardner examines how the government is having to adapt its approach to a rapidly evolving threat.