One of my recent answersrecent answers was deleted as not an answer to the question. However, I assert that I did in fact answer the question:
Q: What can the United Nations do after the chemical attack in Syria?
A: The chemical reside, the remains of the ordinance, and the debris of the area of attack need to be independently examined to assert exactly what happened. Supposedly the UN has the capacity to perform such an analysis.
The rest of the answer expands on this.
Screenshot for those with insufficient reputation to see the deleted answer.