Gas attacks in Syria

There is high likelihood that the Syrian regime was behind the gas attacks (I am not expert on chemical attacks but found the Russian explanation unconvincing) although there is a need for a reliable investigation and I am surprised that Ken Roth of HRW (who never EVER makes judgements about Israeli massacres and attacks as he calls calls for caution in the case of Israel pending further on-site investigations) has determined responsibility within seconds of the news.  If the Syrian regime is sincere in its denial (which I doubt very much) it should be eager for an investigation.  But having said all that: for those among the rebels who pick and select children from among the victims (unless there are only children among the victims) and then to pile them up on top of each other for extra photo-op effect is nothing short of another war crime.  It is mutilation of bodies.