Media playback is unsupported on your device

US brands Nigeria's Boko Haram and Ansaru 'terrorists'

13 November 2013 Last updated at 20:51 GMT

The US has designated Nigeria's Boko Haram and Ansaru militant groups as foreign terrorist organisations.

The state department described the move as "an important" step to help Nigeria "root out violent extremism".

The BBC's Will Ross reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.