Ban, find, inspect and destroy. That's the four-step plan Russia is proposing to strip the Syrian regime of one of the world's largest chemical weapons arsenals - and avert a US military strike. But amid a chaotic civil war, it would be tough - if not impossible - for UN inspectors to dismantle Syria’s stockpile. For a closer look at what disarmament entails, Douglas Herbert speaks to Camille Grand, Director of the Foundation for Strategic Research.