One of the revelations of the 14 April military attack on three government sites in Syria by the United States, France and Britain is that the specifics of Bashar al-Assad’s enduring WMD program must have been known, in advance, by Western intelligence agencies. How else could the Allies – in response to the Douma atrocity – target with such alacrity and precision the Barzeh research and development site in Damascus, the Him Shinsar storage site near Homs and the Him Shinsar bunker also near Homs?

Self-evidently, everything the Obama administration ever said about ending Syria’s chemical weapons industry through the auspices...