On Monday, President Assad’s air force reportedly dropped four barrel bombs with chlorine canisters on the town of Sarmin in Idlib Province in northwest Syria.

See Syria Daily: Reports — Chlorine Bombs Kill and Wound Scores in Idlib Province

The toll of dead and injured is not certain — unconfirmed reports speak of at least 20 killed and more than 100 wounded — but videos from Syrian civil defense and medical facilities testify to scores of injured, including infants and children.

The attacks:

Schoolchildren flee after airstrikes:

The victims: