"Some experts found it troubling that the children all had hugely dilated pupils, which is quite contrary to the known effect of this gas - sarin, which is very powerful nerve agent known to cause the victim's pupils to [contract], to be reduced to a size of a pin, pinpointed pupils," the diplomat explained. Alexander Shulgin [Russia's OPCW envoy] pointed out that JIM experts were well aware of this anomaly, but said "they were not asked to investigate this particular thing." Shulgin recalled how the Russian side was repeatedly told: "Don't worry, just wait for the JIM reports, we'll have all the answers." But in their conclusions "there is no hint as to what has happened to the children," he added.
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The UN-OPCW mission has apparently, from the very beginning, settled on an aerial attack as the main theory behind the incident. Moscow, meanwhile, after examining the size and shape of the crater left from the explosion, continues to insist that the detonation and dispersal of the chemical agent likely occurred on the ground. Russia slammed the conclusions of JIM and questioned whether its mandate, which expires next week, should be renewed in its current form.
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"We are of the view that the JIM report, the seventh report, has been established by a flagrant disregard of [the] basic higher standards of the Chemical Convention, UN Security Council resolutions and previous decisions by the ECE executive council. ... It is about the non-respect of the chain of custody, basic methods of investigation whereby samples should be taken by authorized experts who are expected to ensure their custody, in other terms, protection, all the way until a designated laboratory," Shulgin emphasized.

The JIM mission, which never actually visited the site of the alleged attack, instead relied on evidence collected by the militant groups controlling the area. The investigation also failed to properly inspect the Shayrat Airbase by not gathering ground samples there. Shulgin said JIM's team trusted data provided by questionable sources - the militants - while dismissing information offered by the Syrian government.

"It is about very skewed approach whereas information collected, provided by various NGOs affiliated with the terrorist armed groups are trusted, whereas the data, information provided by the Syrian authorities are at best ignored," he noted.