The argument for an attack on Syria is the claim that Assad’s regime has used chemical weapons, in contravention of the Chemical Weapons Convention, as approved by the United Nations. Under the same convention, 78% of the declared stockpiles of such weapons have been destroyed, including those of the US and UK. (I’m not a know-all – I just got this from Wikipedia). Therefore, the argument goes, the Syrian regime should pay a penalty, so that they do not benefit from their use, and to discourage others from doing the same.
But (and it’s a big but), conclusive evidence has not been produced to show that it was Assad’s regime, and not Al Qaeda or some other bunch of nutters, that committed the offence. Can we (or the US) fairly mete out punishment when we are not 100% sure who are the perpetrators of this terrible deed? Perhaps we can justify an attack on the weapon stores or production facilities (if we know where they are) on the grounds that it will prevent their use, whether or not they have been used already. The question then is whether such an attack will release large volumes of deadly substances that will lead to the sort of massacre that the Chemical Weapons Convention was intended to prevent.