There ya go... thinking again </sarcasm
Seriously, you are correct. This should be a "stop the presses" story. Only Newsmax.com, FR, and VERY few other media outlets reported the full stories. The fact it is not a media blitz is quite telling about thier concern for the truth. The fact that it is reported so differently also speaks volumes. I really would like to know what these chemicals are.
That said, since the report indicates these were the primary components of the agent, it leads me to believe the agent was Sarin. Sarin gas is a bynary compound: You must mix two components together to produce it. Some other chemical weapons are like this, since transporting inert components is obviosly safer than moving an assembled weapon. I'm betting Sarin or Mustard Gas since they are simpler and would survive the explosion better, but GB blister or VX nerve are also possibilities. The issue with some types of GB and VX in a bomb is they dissapate quickly in high heat. Even desert temps will render it lees-than-leathal in a relativly short time.
This was part of the old Soviet doctrine we trained against. The Soviets trained to use "non-persistant" or short duration chem attacks to separate NATO units or destroy C2 nodes and "rear" areas that the Red Army would eventually want to move through. Anyone ever going to NTC remembers the non-persistant chemical stikes that would seal off movement corridors while the OPFOR attacked at thier leisure. For those not in the military, don't worry, our training NBC attacks were all notional and marked with innocuous smoke granades and a O/C (referee) to judge who did the right things and who got "killed".