Even if Russia's proposal of locking down Syria's chemical weapons receives international assent, experts believe it could still take years to realise.
Destroying chemical weapons is a hugely hazardous task that cannot be rushed, and according to US intelligence there are some 1,000 tonnes worth across some 41 sites in Syria.
ITV News' Diplomatic Correspondent John Ray reports on the challenges involved:
More top news
Singer Lil' Chris - who was found dead last week - suffered with depression and mental health issues for years, his family said.
Binge drinking is costing British taxpayers £4.9 billion a year, a new study claims.
Details of thousands of peoples' medical records are being sold to fraudsters, it has been reported.