From the UN
inspectors' report on the chemical attack in Damascus on August 21, photographs of the rocket fragments in which the sarin was delivered. The bottom segment includes Cyrillic script. There are only so many places, beginning with Russia, with where it could have come from. The report also hints that the timing of the attack was specifically chosen for favourable weather conditions (low air circulation at ground level). Whoever did it wasn't just trying their luck, and knew a lot about chemical weapons.
And they've gotten away with it.
