Something that the politicians have not been telling the public much (if anything) about is that Syria cannot destroy its stocks of chemical weapons in a few days...or indeed in even a few months...because its a very difficult, slow, and costly process to do so, no matter who does it. This is why the USA and Russia, for example, still have much larger stocks of banned chemical weapons in their inventories than Syria does, and have been trying to destroy those stocks of chemical weapons for decades...and are far from finished doing so.

Here's an article that explains some of the difficulties:

Destroying Syria's chemical weapons - length of time needed to do so.

It is literally impossible for Syria to dispose of their chemical weapons quickly, even with massive foreign assistance from Russia or other powers, and it will probably take years to do it.

The western politicians are not making these facts plain to their own public when they pressure Syria for quick results to something that cannot be done quickly by anyone, let alone the Syrians, who are embroiled in a civil war.