Evidence from intercepted communications by the US military and Intelligence community is being released which shows that the Syrian military and chemical experts were talking about preparations for the sarin attack that took place in Idlib last week, killing and injuring more than 100 people.
CNN The intercepts were part of an immediate review of all intelligence in the hours after the attack to confirm responsibility for the use of chemical weapons in an attack in northwestern Syria, which killed at least 70 people. US officials have said that there is “no doubt” that Syrian President Bashar al-Assad is responsible for the attack.
The US did not know prior to the attack it was going to happen, the official emphasized. The US scoops up such a large volume of communications intercepts in areas like Syria and Iraq, the material often is not processed unless there is a particular event that requires analysts to go back and look for supporting intelligence material.