Media playback is unsupported on your device

Turkey says a red line has been crossed

23 August 2013 Last updated at 03:28 BST

UN Secretary-General Ban Ki-moon has said the alleged chemical weapons attack near the Syrian capital "needs to be investigated without delay".

He is sending disarmament chief Angela Kane to Damascus to press for an investigation, his spokesman Eduardo del Buey said on Thursday.

Turkish Foreign Minister Ahmet Davutoglu has also stressed the need for an urgent response, and criticised the lack of UN action. He told Newsnight's Victoria Derbyshire that it is "not the first time Assad has crossed red lines".

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.