“On chemical weapons, I set a red line and I reaffirm that red line,” Macron told reporters in Paris on Tuesday. “Today, our agencies, our armed forces have not established that chemical weapons, as set out in treaties, have been used against the civilian population.”

If any evidence is found, France will strike the places where chemical weaponry shipments "originate," he added. The French President also recalled his phone conversations with Russian President Vladimir Putin, which took place last Friday.