Scores of civilians -- among them many children -- were killed and more than 200 were injured in an airstrike today (April 4, 2017) that released toxic gas on a town in northwest Syria, according to the Times of Israel website.
The Britain-based Syrian Observatory for Human Rights -- a monitoring group -- put the number of dead at 58, although unconfirmed reports said over 100 were killed.
The nature of the deadly chemical substance has yet to be confirmed, but a British doctor at the scene tweeted that the chemical released was sarin gas.
Government planes carried out the airstrike on a rebel-controlled area in Khan Sheikhoun, south of the city of Idlib, the provincial capital. Former U.S. President Barack Obama had promised to send U.S. forces to Syria to overthrow President Bashar Assad if he used chemical weapons against Syrian rebels, but Obama never carried out his promise, despite Assad's use of chemicals at that time.