2 August 2012 Updated at 14:48 ET
Syria crisis: Kofi Annan quits as UN-Arab League envoy
Kofi Annan: "There continues to be finger pointing and name calling in the Security Council"
Syria conflict
Fear and hunger in Aleppo
The rise of jihadist groups
Fighting and refugees in maps
Aleppo's battleground school
The UN-Arab League joint special envoy to Syria, Kofi Annan has announced he is leaving his post.
link-
http://www.bbc.co.uk/news/world-middle-east-19099676