UN weapons teams are inside Eastern Ghouta on the outskirts of Damascus, meeting local people and gathering evidence of a possible chemical weapons attack.
Pictures of the what appears to be the inspection are being streamed live on the internet by a filmmaker called Moahmaih Alsham.
You can watch clips from the visit, as it happens here.
More top news
A summary of the key announcements from Chancellor George Osborne's Autumn Statement and Spending Review.
All cuts have consequences, warns Joel Hills, as he examines which assets may be up for sale if George Osborne decides 'everything must go'.
Tests revealed she was suffering from secretory carcinoma - which affects just "one in a million people" diagnosed with the breast cancer.